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If your GMC Yukon is experiencing rough idling, hesitation under load, or uneven fuel economy, the fuel injectors are a common place to check. Choosing the right fuel injector matters because fitment, flow rate, and build quality directly affect drivability and engine health. This guide shortlists the top options for GMC Yukon fuel injector swaps and replacements. Each pick was assessed for fit and expected performance using practical criteria like flow consistency and sealing reliability. Read on to learn the factors we used and which injector traits are most important for your Yukon.
Looking for other parts? See all GMC Yukon parts & accessories.
Top Picks at a Glance
| Best Reviewed A top-rated pick with lots of positive feedback | Axiovate FJ504 Spider Fuel Injector Assembly with Bracket |  |
| Most Popular A crowd favorite that many people choose with confidence | ENA Spider Fuel Injector (replacement for 89060440) |  |
| Best Quality Built to a higher standard if you want something more solid | YIHOVY Upgraded Fuel Injectors 12594512 (set of 8) |  |
| Best Budget The cheapest option that still gets the job done reliably | NBGZJYT Set of 2 Fuel Injectors for GMC Yukon 5.7L V8 |  |
| Most Sold A high-volume bestseller chosen again and again | A Plus Auto Fuel Injectors Set of 8 for V8 4.8/5.3/6.0L |  |
| Best Value for Money The sweet spot between price and what you get | Pjvmvo GM19421333 Performance Fuel Injector Set (Set of 8) |  |
| Best Overall The best all-around choice for most situations | Pjvmvo 12613411 Flex Fuel Injectors — Set of 8 |  |
1. Axiovate FJ504 Spider Fuel Injector Assembly with Bracket
| Brand | Axiovate |
|---|---|
| Model | FJ504 |
| Item model number | FJ504 |
| Manufacturer Part Number | JS-PSQ-002 |
This Axiovate FJ504 spider injector assembly is a plug-and-play replacement that bundles the injector spider and mounting bracket so you can swap the unit without fabricating hardware. It is intended to restore fuel pressure distribution and solve misfires, rough starts, or low-pressure faults by replacing a worn spider assembly on compatible GMC V8 applications. Buyers report straightforward installs when matching factory mounting points and connectors, and the machined exterior and included bracket simplify alignment and secure mounting. Practical benefits include faster repair time versus rebuilding individual injectors and avoidance of extra parts sourcing. Common limitations are occasional fit and tolerance differences compared with factory replacement parts that may require small adjustments during installation, and some plastic components and stiffer hoses noted by users that can make routing harder on tight engine bays. If you need a cost-effective, ready-to-install spider injector to get a Yukon back to reliable running, this unit is a sensible option provided you double-check fit and take care routing fuel lines during install.
Best for: Reliability-focused buyers who prioritize restoring dependable engine operation quickly and prefer a ready-to-install replacement over rebuilding components themselves for a GMC Yukon.
Less Ideal for: Buyers seeking an exact factory reproduction or a long-term OEM-certified rebuild should consider remanufactured factory-quality units or dealer-sourced options instead.
- Complete spider injector assembly with bracket for faster, single-piece replacement
- Machined exterior and connectors designed to match factory mounting points for straightforward installation
- Reported to resolve misfires, rough starts, and low fuel pressure symptoms when matched to the engine
- Includes parts that let you replace the whole unit without sourcing multiple components
- Occasional manufacturing tolerance issues requiring minor adjustment to secure fuel return lines
- Some plastic parts and stiff tubing reported, which can complicate routing in tight engine compartments
- Not an exact factory-quality reproduction in every dimension so careful pre-install verification is advised
Verdict Axiovate FJ504 is a convenient, cost-effective spider injector assembly to quickly restore fuel delivery on compatible GMC V8s, but expect occasional fitment tweaks compared with factory parts.
2. ENA Spider Fuel Injector (replacement for 89060440)
| Material | Metal |
|---|---|
| Inlet Connection Type | National Pipe Tapered |
| Outlet Connection Type | NPT |
| Number of Ports | 2 |
This ENA spider fuel injector replaces the factory unit used on several GM V8 applications and is intended to restore proper fuel distribution and pressure to engines that use the spider-style system. Installation is typical for a fuel spider component and is usually performed by a mechanic or an experienced DIYer with fuel-system precautions. Notable features listed include metal construction, NPT outlet and national pipe tapered inlet connections, and two ports. The practical benefit is that it addresses common failure modes of aging spider systems—poor starting, bogging, and loss of power—by replacing a leaking or failed injector assembly with a direct replacement part. Limitations to expect are typical of aftermarket injectors: long-term durability can vary, some units have reported early failure or driveability issues, and a proper bench test or pressure check after installation is recommended to confirm correct operation.
Best for: Buyers prioritizing convenience who want a ready-to-install replacement to get a late 1990s GMC Yukon back on the road quickly without sourcing rare OEM parts.
Less Ideal for: Drivers seeking a long-term factory-quality remanufactured solution or those who prefer locally sourced parts and full-system rebuilds for high-mileage vehicles should consider alternatives.
- Direct replacement for GM spider fuel injection systems that restores fuel delivery
- Metal construction with standard inlet and outlet fittings for straightforward plumbing
- Sold as an individual injector unit so you can replace just the failed piece without buying a full harness
- Aftermarket quality varies and some buyers report early failures or flooding issues
- Limited long-term reliability data compared with factory or well-known OEM remanufactured parts
Verdict A convenient, direct-fit aftermarket spider injector to revive a GMC Yukon V8 fuel system quickly, but expect variable long-term durability.
3. YIHOVY Upgraded Fuel Injectors 12594512 (set of 8)
| Fitment | GMC Yukon 2007-2009 5.3L FlexFuel |
|---|---|
| Quantity | 8 injectors per set |
| Material | Alloy Steel |
| Specification Met | ISO 9001 |
These YIHOVY injectors are sold as a matched set of eight and are marketed to directly replace the factory injectors on 2007–2009 GMC Yukon 5.3L FlexFuel engines. In use they supply a steady, metered stream of fuel to each cylinder to stabilize idle and maintain consistent performance under load. The parts are machined alloy steel with threaded inlet/outlet fittings and are ISO 9001 specified, which suggests attention to manufacturing controls. Buyers report straightforward fitment and improved smoothness after installation, and the seller provides responsive customer support. Expect to install these under professional guidance and to lubricate O-rings during fitting for a reliable seal. Limitations are the unit is an aftermarket replacement rather than factory-branded and some buyers noted cosmetic imperfections on individual injectors in a few orders, so inspect the kit on arrival before installation.
Best for: Performance-oriented owners who want to restore or maintain the Yukon 5.3L FlexFuel engine's smooth idle and throttle response with a full matched injector set.
Less Ideal for: Buyers seeking a factory-branded OEM part or those unwilling to have a professional install fuel system components should consider other options.
- Full matched set of eight for V8 5.3L FlexFuel engines simplifies replacement of all cylinders at once
- Machined alloy-steel construction and ISO 9001 specification indicate controlled manufacturing quality
- Threaded inlet and outlet fittings match factory connection style for direct replacement
- Multiple buyer reports of improved idle smoothness and reliable fitment on 2007–2009 Yukon models
- Aftermarket product rather than factory-branded injector
- Occasional reports of cosmetic wear or used-looking units in some shipments requiring inspection
- Requires professional installation and correct O-ring lubrication for proper sealing
Verdict A matched eight-pack of aftermarket injectors that restores smooth idle and performance to 2007–2009 Yukon 5.3L FlexFuel engines, with good manufacturing control but requiring professional installation.
4. NBGZJYT Set of 2 Fuel Injectors for GMC Yukon 5.7L V8
| Compatible engines | 5.7L V8 |
|---|---|
| Included components | Set of 2 Fuel Injectors |
| Terminal quantity | 2 |
| Hole quantity | 6 holes |
| Fuel type | Gas |
These NBGZJYT fuel injectors are a low-cost replacement option for GMC Yukon 5.7L V8 engines from the early 1990s. Sold as a set of two, they use a metal and composite-plastic design, include preinstalled O-rings and come with the necessary electrical pin terminals. In practice they serve as direct replacements for worn or leaking injectors, restoring fuel delivery and helping smooth idle and throttle response when matched to the remaining original injectors. The injector has six spray holes and is configured for a male two-pin terminal, so installation is straightforward for a mechanically competent owner or a technician familiar with these Yukons. Expect basic factory-replacement performance rather than any performance gains. The main limitations are that this is a budget aftermarket part with limited testing history and a short warranty period, so long-term durability may not match higher-tier replacement injectors and professional bench-flow matching is not provided.
Best for: Budget-conscious owners focused on restoring normal operation of an early 1990s GMC Yukon 5.7L V8 without paying for premium OE-level injectors.
Less Ideal for: Do not choose this if you need guaranteed long-term durability, matched flow-bench performance, or if you are building a performance-tuned Yukon where injector flow consistency is critical.
- Direct-fit design for 5.7L V8 GMC Yukon models listed, simplifying installation
- Includes preinstalled O-rings and required terminal pins to reduce parts needed at install
- Metal/composite construction typical of standard replacement injectors
- Sold as a pair which is convenient for replacing two injectors at once on one bank
- Budget aftermarket build with limited long-term reliability data compared with premium replacements
- Sold in a set of two only, so replacing a full bank or all eight injectors requires multiple purchases
Verdict A practical, low-cost replacement for restoring fuel delivery on a 5.7L GMC Yukon, best when you need an affordable fix rather than long-term OEM-grade durability.
5. A Plus Auto Fuel Injectors Set of 8 for V8 4.8/5.3/6.0L
| Compatible engines | V8 4.8L, 5.3L, 6.0L |
|---|---|
| Fitment years | GMC Yukon 2000-2006 |
| Quantity | Set of 8 |
| Replaces part numbers | 17113698, FJ315, MP-10006, 8171136980, FJ10062 |
This eight-piece injector kit is built to replace the factory injectors on compatible GMC Yukon V8 engines and is intended for a direct-fit swap. Installers typically use the set when restoring fuel delivery after clogged or leaking injectors or when doing a multi-injector service to keep flow balanced across cylinders. The listing highlights compatibility with Yukon model years 2000 through 2006 across 4.8L, 5.3L, and 6.0L engines and lists several replaceable part numbers for cross-reference. Practical benefits include replacing all eight injectors at once to restore consistent spray patterns and idle quality, and the kit simplifies sourcing by matching common factory replacement part numbers. Limitations are that fitment is restricted to the specified Yukon years and engines so confirm year and engine code before buying, and the product description does not include flow rate or electrical connector pin details that a technician might check for precise tuning or diagnostic work.
Best for: Risk-averse mainstream buyers who prioritize a straightforward factory-replacement approach and want to restore reliable daily driving performance without experimental upgrades.
Less Ideal for: Shoppers seeking performance injectors for higher flow or tuned engines or those who need documented electrical and flow specifications for engine management calibration should consider specialist or performance-oriented options instead.
- Sold as a complete set of eight so all cylinders are matched after replacement
- Direct-fit design for the listed GMC Yukon years and V8 displacements reduces installation fuss
- Cross-referenced part numbers make it easier to confirm compatibility with factory replacements
- Compatibility scope is limited to specific Yukon model years and engine sizes so not universal
- No flow-rate or electrical spec data provided for precision matching or performance tuning
Verdict A practical, all-eight replacement injector set for 2000–2006 GMC Yukon V8s that simplifies restoring factory-style fuel delivery but lacks detailed flow and electrical specs for tuning.
6. Pjvmvo GM19421333 Performance Fuel Injector Set (Set of 8)
| Brand | Pjvmvo |
|---|---|
| Model | GM19421333-0229 |
| Manufacturer Part Number | FJ0681FBYEY |
| Fitment note | Compatible with 4.8L 5.3L 6.0L GMC engines; set of 8 |
These Pjvmvo injectors are sold as a complete set of eight replacement injectors intended to restore proper fuel delivery on compatible V8 GM engines. They are presented as new, VIN-matched parts that the seller says are cleaned, inspected and tested before listing. Installation is typical for injector replacement: remove the intake components as needed, swap the old injectors for the matched set, and reconnect electrical and fuel connections. Practical benefits include full-bank replacement at once to rebalance spray patterns and improve idle smoothness on engines with mixed injector wear. Several customers report good fit and improved operation, though a minority experienced misfires after installation, indicating possible unit variability. These injectors list multiple matching OEM numbers which simplifies verifying fit for the Yukon. Expect a cost-effective option compared with dealer parts, but be prepared to troubleshoot or exchange individual units if you encounter a faulty injector. Proper installation, sealing, and testing after fitment are important to avoid drivability issues.
Best for: Practical optimizers looking to restore engine smoothness on a GMC Yukon without paying dealer prices and who prefer replacing the entire bank at once to avoid mixed-age injectors.
Less Ideal for: Buyers seeking manufacturer-backed long-term coverage or guaranteed performance for high-mileage engines should consider factory-quality replacements or a professional remanufactured option.
- Complete set of eight for full-bank replacement on compatible GM V8 engines
- Seller reports individual cleaning, inspection and testing prior to listing
- Matches multiple OEM part numbers to simplify fit verification for the vehicle
- Lower-cost alternative to factory replacement injectors for budget-conscious repairs
- Some buyers reported faulty units causing misfires, indicating variable quality control
- Not sold with explicit vehicle-specific warranty or long-term performance guarantee
Verdict A budget-friendly full-bank injector set for GMC Yukon owners who want a practical, lower-cost replacement but should expect some variability in unit quality.
7. Pjvmvo 12613411 Flex Fuel Injectors — Set of 8
| Material | Metal |
|---|---|
| Inlet Connection Type | Solder |
| Outlet Connection Type | SAE |
| Number of Ports | 6 |
These Pjvmvo 12613411 injectors are a direct replacement set of eight for GMC Yukon 4.8, 5.3 and 6.0 Flex-fuel engines and are intended to bring a misfiring or rough-running engine back to factory-like operation. Installation is typical for injector replacement: remove the fuel rail, swap the injectors (O-rings are included on many units) and reinstall. The listing emphasizes VIN matching and pre-delivery inspection, and customers report improved idle, smoother throttle response and return to normal fuel economy when the units match the application. Because they are sold as a full set, this is a practical option when multiple cylinders show issues or when refreshing an older fuel system. Caveats include mixed user reports about durability and one report of severe drivability consequences; that suggests careful verification of fit and quality checks after installation. Expect standard injector-level performance but be prepared to validate spray pattern and check engine sensors after fitting if you encounter drivability changes.
Best for: Balanced owners who want an affordable full-bank replacement to restore smooth operation on a GMC Yukon Flex-fuel engine and prefer buying a matched set rather than replacing individual injectors.
Less Ideal for: Those who need guaranteed long-term durability or who prefer OEM-branded injectors with a documented manufacturer warranty should consider factory-quality alternatives.
- Sold as a complete set of eight, which simplifies full-bank replacement on V8 Yukon engines
- VIN matching and pre-delivery inspection claims reduce fitment uncertainty for compatible vehicles
- Includes O-rings on many units to speed installation
- Multiple user reports of improved idle, throttle response and restored fuel economy after replacement
- Some buyer reports cite inconsistent quality and at least one instance of severe drivability and emissions issues
- Not backed by a manufacturer warranty listed in the product specs on the page
Verdict A convenient, cost-effective full set for restoring fuel delivery on GMC Yukon Flex-fuel V8s, but verify fit and watch for variable quality reports.
Choosing the Right GMC Yukon Fuel Injector: Key Factors to Consider
Fitment And Connector Type
Correct mechanical and electrical fit is essential because injectors must mount securely and mate with the vehicle harness without splicing or adapter modules. A precise fit reduces installation time and minimizes the risk of vacuum leaks or connector failures that can trigger drivability problems.
When evaluating fitment, confirm mounting dimensions, retaining clip style, and the electrical connector type. Differences in tip length or inlet geometry can alter spray position and affect combustion efficiency, so fitment is not just about convenience but about engine performance.
Flow Rate And Tolerance
The flow rate determines how much fuel the injector delivers at a given pulse width, so matching the injector flow to the engine’s requirements is important for correct air/fuel ratio. Select injectors with flow rates appropriate for your GMC Yukon’s engine and pay attention to manufacturer tolerance specifications to avoid leaning or rich conditions.
Consistent flow among all injectors in a bank is critical. Variations lead to cylinder-to-cylinder imbalance, rough idle, and increased emissions. Look for injectors that are tested for flow uniformity and provide documented flow curves when available.
Spray Pattern And Atomization
Spray pattern affects how fuel mixes with incoming air, which influences combustion quality and emissions. A focused, well-atomized spray promotes efficient burn and steady idle, while a poorly shaped spray can cause misfires or rough running.
Consider whether the injector is designed for port injection in your engine’s intake geometry and whether the spray pattern aligns with the injector’s installed orientation. Improved atomization can also reduce soot buildup on intake valves over time.
Seal Materials And Leak Resistance
Injector seals and O-rings are the primary defense against fuel leaks and vacuum leaks, both of which create performance and safety issues. Materials that resist degradation from heat and fuel additives will maintain a reliable seal for longer.
Inspect the specified seal materials and any protections against seepage at the injector pintle. Proper sealing also helps prevent intake air leaks that upset the air/fuel ratio and cause idle instability or diagnostic trouble codes.
Resistance To Clogging And Maintenance Needs
Injectors encounter small particulates and varnish from fuel, so resistance to clogging affects longevity and performance consistency. Designs with internal filtration, compatible internal coatings, or proven spray stability will need cleaning less often.
Consider how easy the injector is to service or replace during routine maintenance. If your area’s fuel quality is variable, choosing injectors that tolerate deposits and respond well to cleaning procedures will reduce unexpected issues.
Durability And Electrical Reliability
The injector’s electrical components and moving parts must withstand repeated cycles and heat exposure. Coil insulation quality, pintle return spring durability, and corrosion-resistant terminals contribute to sustained operation without intermittent faults.
Reliable electrical performance reduces the chance of misfires or diagnostic codes due to failing drivers. Durability considerations also include resistance to vibration and secure mounting features to avoid mechanical wear over time.
FAQ
What are common symptoms of a bad fuel injector in a GMC Yukon?
Common symptoms include rough idle, hesitation during acceleration, and uneven engine performance. You may also notice an increase in fuel consumption or occasional misfires. Some symptoms overlap with other issues, so combine symptom checks with targeted testing to isolate injectors.
How do mechanics test fuel injectors on a GMC Yukon?
Technicians often use fuel injector testing that checks electrical resistance and pulse response, plus flow testing to measure actual fuel delivery. A noid light can verify injector pulse from the harness and diagnostic scanning can reveal related fault codes. Testing both electrical and hydraulic performance gives a fuller picture.
Can fuel injector cleaning fix performance problems?
Cleaning can restore proper spray pattern and flow if deposits are the primary cause of poor performance. Professional cleaning and some on-vehicle cleaning methods often help, but heavily degraded or mechanically damaged injectors may still require replacement. Cleaning frequency depends on fuel quality and operating conditions.
How do I know if an injector is leaking?
Leak symptoms include fuel odor in the engine bay, visible wetness around the injector seals, and rough running caused by a rich cylinder. Leak checks include visual inspection of seals and pressure testing the rail and injector connections. Address leaks promptly because they can present safety and drivability risks.
Is a performance-oriented injector necessary for typical GMC Yukon use?
For most everyday driving and light towing, stock-equivalent injectors that match the engine’s flow requirements are sufficient. Performance-focused injectors are usually only needed if you make other engine modifications that increase fuel demands. Choosing the right injector depends on your planned use and any supporting modifications.
When should I consider replacing rather than repairing a fuel injector?
Consider replacement if an injector shows mechanical damage, persistent wiring faults, or fails flow testing after cleaning attempts. Replacing is also sensible when multiple injectors show inconsistent flow, since uneven delivery can be hard to correct by servicing single units. Evaluate repair versus replace based on test results and long-term reliability needs.
How We Chose the Best GMC Yukon Fuel Injector
We focused on parts that are intended specifically for the GMC Yukon platform and evaluated them on criteria that matter in everyday use. Our primary filters included correct electrical and mechanical fitment for the Yukon, consistent flow characteristics across injectors, and durable sealing materials that resist fuel and heat exposure. We also assessed expected service life based on construction, resistance to common failure modes, and compatibility with routine maintenance procedures. Excluded from consideration were generic or universal injectors that require substantial modification, components lacking clear fitment data for the Yukon, and altered or rebuilt units without verifiable quality documentation. The dimensions that mattered most were spray pattern consistency, flow rate tolerance, O-ring and seal materials, connector type, and resistance to clogging under typical fuel conditions. These criteria help ensure the shortlisted options provide reliable performance and straightforward installation.
Our full evaluation process is outlined in our review methodology.
Conclusion
When choosing a replacement injector for a GMC Yukon, prioritize correct fitment, consistent flow characteristics, and robust sealing materials. Those factors directly influence drivability, idle quality, and long-term reliability. Weigh tradeoffs between ease of installation and long-term maintenance needs. If you face deposit-prone fuel or heavy use, favor injectors with strong resistance to clogging and proven electrical durability to reduce future service interventions.
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