Note: This article contains affiliate links. If you click on these links and make a purchase, I may earn a small commission at no extra cost to you. This helps support my research and content. Read my full affiliate disclaimer here.
If your Cadillac SRX is hesitating, misfiring, or using more fuel than usual, the ignition coil could be the source of the problem. Choosing the right ignition coil matters because fitment, electrical output, and durability directly affect engine smoothness and starting reliability. This guide presents seven shortlisted ignition coils selected for their suitability with the Cadillac SRX and explains the practical factors buyers should weigh. Read on to see which characteristics we prioritized and how they influence real-world driving and maintenance.
Looking for other parts? See all Cadillac SRX parts & accessories.
Top Picks at a Glance
| Best Reviewed A top-rated pick with lots of positive feedback | Bosch 221604112 Ignition Coil — Single |  |
| Most Popular A crowd favorite that many people choose with confidence | ECCPP Ignition Coils Pack of 8 (UF543) for Cadillac SRX and Buick Lucerne 4.6L |  |
| Best Quality Built to a higher standard if you want something more solid | A-Premium Ignition Coil Pack 2‑Piece Set for Cadillac V8 4.6L/4.4L |  |
| Best Budget The cheapest option that still gets the job done reliably | DICMIC Ignition Coil Pack Set of 6 Compatible with Cadillac SRX V6 3.6L (Replace# UF375) |  |
| Most Sold A high-volume bestseller chosen again and again | Motorevo Ignition Coil Pack and Iridium Spark Plugs Kit (Set of 6) |  |
| Best Value for Money The sweet spot between price and what you get | ENA Ignition Coil Pack UF-372 Compatible with Cadillac 4.6L V8 (Set of 1) |  |
| Best Overall The best all-around choice for most situations | ENA Ignition Coil and Iridium Spark Plug Pack for Cadillac SRX 3.6L (6‑Pack) |  |
1. Bosch 221604112 Ignition Coil — Single
| Connector Gender | Female-to-Male |
|---|---|
| Installation Type | Plug In |
| Automotive Fit Type | Vehicle Specific Fit |
| Position | Front, Rear |
This Bosch ignition coil is a direct-fit replacement engineered to meet or exceed factory specifications for Cadillac SRX engines that use this part number. It supplies consistent high voltage to the spark plug, helping restore smooth idle, reliable cold starts, and stable performance under load. Typical use is straightforward: unplug the old coil, plug the Bosch unit into the factory connector, and reinstall — the plug-in installation type and matching connector gender make swaps quick for a DIYer or technician. Notable features include corrosion-resistant electrical connections, temperature and vibration resistance, and construction intended for long service life. In practice that means fewer misfires, reduced rough-running episodes, and return of normal fuel economy when a failing coil is the cause. The product is a single coil rather than a multi-pack, so replacing multiple failing coils requires separate purchases. Also longevity can vary with operating conditions and earlier reviews note common service-life intervals similar to factory coils, so keeping a spare on hand may be prudent.
Best for: Reliability-focused Cadillac SRX owners who prioritize factory-quality replacements and want a dependable, like-for-like coil to fix misfires and restore engine smoothness.
Less Ideal for: Buyers seeking to replace all coils at once on a budget or those who prefer bundled multi-coil kits should consider multi-pack options instead.
- Built to meet or exceed factory specifications for reliable ignition performance
- Corrosion-resistant connections for consistent electrical contact
- Good temperature and vibration resistance for long service life
- Plug-in installation and compatible connector for straightforward replacement
- Sold as a single coil rather than a multi-pack
- Service life can mirror factory intervals, so failures may recur over time
Verdict A dependable, factory-quality single replacement coil for Cadillac SRX owners who want a like-for-like fix to misfires and rough running.
2. ECCPP Ignition Coils Pack of 8 (UF543) for Cadillac SRX and Buick Lucerne 4.6L
| Compatible with Vehicle Type | Cadillac SRX 2007-2009; DTS 2007-2011; STS 2007-2010; XLR 2007-2009; Buick Lucerne 2007-2011 (4.6L) |
|---|---|
| Part Interchange Info | D598A, 5C1616, E1043, 52-1857, IC623, 12597745, UF-543, C1559, 0541A |
| Connector Gender | male |
| Installation Type | coil-near-plug |
These ECCPP ignition coils are sold as a pack of eight replacement coil-near-plug units intended for 4.6L Cadillac SRX (2007–2009), DTS, STS, XLR and Buick Lucerne (2007–2011). They install using the factory-style connector and mounting, so a straightforward swap restores spark to each cylinder without modification. In use they address misfire codes and rough idle caused by failing coils and are built to tolerate typical engine heat and vibration. The listing claims direct interchange with several factory part numbers, which simplifies buying the correct item for the listed vehicles. The practical benefit is convenient, one-stop replacement of all coils when you want to avoid multiple trips to a parts store or staggered repairs. Limitations include mixed long-term reliability reports across buyers and the inherent risk when choosing an aftermarket replacement over a factory-quality part, so expect to watch for recurring misfires and keep receipts in case of early failure.
Best for: Drivers who value convenience and want a single, ready-to-install kit to replace all ignition coils at once and get their 4.6L Cadillac SRX or Buick Lucerne back on the road quickly.
Less Ideal for: Owners prioritizing guaranteed OEM longevity or extended warranty coverage should consider factory-brand replacements or dealer parts instead.
- Pack of eight allows full-bank replacement in one service session
- Factory-style connector and mounting for direct installation without modification
- Listed as compatible with specific 4.6L Cadillac and Buick models, simplifying fitment
- Constructed to withstand typical engine temperatures and vibration according to the listing
- Aftermarket reliability is mixed in customer reports, so long-term durability can vary
- Not a factory-brand part, which may concern buyers seeking OEM-level assurance
Verdict A convenient full-bank aftermarket coil kit that makes swapping all eight coils simple for 4.6L Cadillac SRX and Buick Lucerne owners, but expect variable long-term reliability compared with factory-brand parts.
3. A-Premium Ignition Coil Pack 2‑Piece Set for Cadillac V8 4.6L/4.4L
| Voltage | 12V |
|---|---|
| Mount Type | Bolt On |
| Terminal Type | Blade |
| Mounting Location | Valve Cover |
| Connector Gender | Male-to-Female |
This A-Premium two-piece ignition coil pack set is a direct-fit replacement for several Cadillac V8 applications and is intended to restore reliable spark delivery for engines that use the later individually replaceable coil design. Installation is bolt-on to the valve cover and the coils use a 12V blade terminal connector that mates with the factory harness, so the swap is straightforward for a competent DIYer or a shop. Buyers will appreciate the individual-coil style that lets you replace a single failed coil instead of the older one-piece assemblies, plus the product ships with common reference numbers for cross-checking fitment. Practical benefits include quick troubleshooting of misfires and a simpler repair path for Northstar-style ignition systems. Limitations are typical of aftermarket coils: longevity can vary and some users report early failures, so results will depend on installation, vehicle condition, and environmental exposure.
Best for: Performance-oriented buyers who prioritize restoring engine smoothness and minimizing downtime will value a direct-fit coil that allows single-coil replacement and faster troubleshooting.
Less Ideal for: Owners who want a guaranteed long-term OEM-level lifespan or an all-vehicle universal solution should consider factory-quality replacements or dealer parts instead.
- Direct bolt-on fit for listed Cadillac V8 models for fast replacement
- Individual replaceable coil design lets you change a single bad coil instead of the whole assembly
- Uses standard 12V blade terminal and factory-style connector for plug-and-play installation
- Aftermarket build quality varies and some buyers report premature failures
- Only covers the specific Cadillac and Pontiac model years listed, not universal fitment
Verdict A practical, performance-minded replacement that restores serviceability by allowing individual coil swaps, but expect variable long-term durability compared with factory-quality parts.
4. DICMIC Ignition Coil Pack Set of 6 Compatible with Cadillac SRX V6 3.6L (Replace# UF375)
| Compatible with Vehicle Type | Car |
|---|---|
| Part Interchange Info | Compatible with UF375, 12583514, 12590954, 12613057 and related numbers |
| Connector Gender | male |
This DICMIC set supplies six ignition coils intended as direct replacements for failed coils on the Cadillac SRX with the 3.6L V6. Each coil connects with the factory plug and is used the same way as the original coil packs: install on top of the spark plugs to reestablish proper ignition timing and eliminate misfires. The listing emphasizes compatibility with the SRX 3.6L and identifies common replaceable part numbers, and the coils are described as quality tested to improve fit and longevity. In practice this kit is useful for repairing rough idle, loss of power, and poor fuel economy caused by weak or broken coils. As a budget option the parts let you replace all six coils at once, simplifying diagnostics and installation. Expect typical aftermarket trade-offs: fit and long-term durability may not exactly match factory parts and the one-year coverage is shorter than many dealer options, so plan to verify part fit and monitor for premature failures after installation.
Best for: Budget-conscious owners seeking an affordable way to fix misfires and restore drivability on a Cadillac SRX 3.6L without buying individual factory coils.
Less Ideal for: Drivers who prioritize long-term OEM-level durability or extended warranty coverage should consider higher-end factory-quality replacements or dealer parts instead.
- Includes a full set of six coils so you can replace every cylinder at once
- Listed compatibility specifically includes Cadillac SRX 3.6L, easing fitment checks
- Connector design matches factory male plug for straightforward installation
- Manufacturer states parts are quality tested to improve fit and lifespan
- Aftermarket construction may not match factory durability over many years
- Warranty coverage is limited to one year
Verdict A cost-effective full set to cure coil-related misfires on the Cadillac SRX 3.6L, but expect typical aftermarket limits in long-term durability and warranty length.
5. Motorevo Ignition Coil Pack and Iridium Spark Plugs Kit (Set of 6)
| Included Components | 6 x Ignition Coil Pack & Iridium Spark Plugs |
|---|---|
| Manufacturer | Motorevo |
| Manufacturer Warranty Description | 5 Year |
This Motorevo kit bundles six ignition coil packs with iridium spark plugs to replace the factory ignition components on compatible GM 3.0L and 3.6L engines. It is typically used when addressing misfires, rough idle, or routine ignition maintenance; installers will swap each coil and plug one cylinder at a time. Notable features called out by the maker include copper-core windings for higher conductivity, ceramic insulators, and design intended to meet or exceed factory durability. In practice that can mean quicker cold starts, smoother acceleration, and improved consistency over worn coils. The kit covers multiple Cadillac 3.6L and 3.0L V6 applications so it is convenient for full-bank service and avoids sourcing parts separately. Important limitations are variable build quality reported by some users and occasional out-of-box failures that may require swapping or warranty support, so professional verification after installation is prudent. Expect a straightforward bolt-in replacement for the right SRX engine but keep a diagnostic scan tool handy to confirm resolved misfires.
Best for: Balanced all-round buyers who want a single kit to restore ignition performance on compatible Cadillac V6 engines and value convenience plus decent durability.
Less Ideal for: Buyers seeking highest-end, brand-name ignition plugs or those unwilling to accept some variability in aftermarket part quality should consider OEM or premium branded alternatives.
- Complete kit includes six coil packs and matching iridium plugs for full-bank service
- Copper-core windings and ceramic insulators claimed to improve spark energy and heat resistance
- Designed to match factory specifications for direct replacement and simple bolt-in installation
- Useful warranty coverage that provides longer-term protection against manufacturing defects
- Some reviewers report intermittent or dead coils out of the box indicating variable quality control
- Spark plugs in the kit may feel lower-end compared with premium branded plugs
Verdict A convenient full-bank coil and iridium-plug replacement for Cadillac V6 engines that offers improved ignition performance for most owners but shows occasional quality variation.
6. ENA Ignition Coil Pack UF-372 Compatible with Cadillac 4.6L V8 (Set of 1)
| Compatible with Vehicle Type | Car |
|---|---|
| Connector Gender | male |
| Mount Type | Bolt On |
| Voltage | 12V |
This ENA ignition coil pack is a single replacement coil designed for Cadillac 4.6L V8 models such as the SRX, DeVille, STS, Seville, and XLR. It functions as a bolt-on replacement to restore consistent spark output where a failing coil causes misfires, rough idle, or loss of power. The unit uses a standard 12V electrical design with a female connector and comes with several part interchange numbers for fit verification. In real‑world use it is installed in the engine bay and wired in place of a worn coil; buyers report it cures misfires and returns drivability when matched to the correct cylinder. The practical benefits are straightforward: relatively low cost, simple installation for experienced DIYers, and compatibility with known Cadillac Northstar applications. Limitations include variable long‑term durability reported by some users and the challenge of accessing rear bank coils on certain Cadillac engines, which makes replacement more time consuming even though the part itself is bolt‑on.
Best for: Practical optimizers looking for an inexpensive, vehicle-specific coil to fix misfires and extend the life of a Cadillac SRX 4.6L without paying dealer prices.
Less Ideal for: Owners seeking a long-term performance or upgraded ignition solution should consider higher-end or branded replacement coils and professional installation.
- Plug-and-play bolt-on fit for Cadillac 4.6L V8 cylinder banks when matched to listed part numbers
- Affordable replacement option that often resolves misfires and idle issues
- Standard 12V design with common connector type simplifies installation and electrical compatibility
- Reports from users indicate consistent spark output that restores acceleration and smooth running
- Mixed long-term reliability in some reports, with occasional early failures
- Accessing and replacing coils on the rear bank of the engine can be difficult despite bolt-on installation
Verdict A budget-friendly, plug-and-play coil pack that fixes misfires on Cadillac 4.6L V8s but may show variable longevity compared with premium options.
7. ENA Ignition Coil and Iridium Spark Plug Pack for Cadillac SRX 3.6L (6‑Pack)
| Vehicle Service Type | Car |
|---|---|
| Connector Gender | Male |
| Installation Type | Plug In |
| Automotive Fit Type | Vehicle Specific Fit |
| OEM Part Number | UF-569, 33400-78J01, 33400-78J02 |
This ENA kit supplies six plug‑in ignition coils paired with iridium spark plugs intended to replace the factory units on Cadillac SRX 3.6L engines. Installation is straightforward: each coil snaps into the factory plug wells and connects to the existing wiring harness, so it is commonly used during routine tuneups or when diagnosing misfire codes. Notable features include vehicle-specific fitment and the inclusion of iridium plugs that deliver stronger, more consistent spark compared with basic copper plugs. For a performance-oriented buyer the kit can restore throttle response and smooth idle when worn coils or plugs cause rough running. Limitations to consider are that longevity and exact durability can vary versus factory parts and some users report the spark plugs in multi-part kits may need earlier replacement. This product is best treated as a high-quality aftermarket replacement that balances improved ignition performance with the convenience of a full six‑cylinder service kit.
Best for: Performance-oriented owners who prioritize restoring crisp throttle response and smooth running on a Cadillac SRX 3.6L and prefer a ready-to-install full‑engine ignition kit.
Less Ideal for: Drivers seeking exact factory-spec longevity or those who prefer to replace only coils or plugs separately rather than a bundled six‑pack should consider alternatives.
- Sold as a complete six‑cylinder kit for one-service replacement on the SRX 3.6L.
- Includes iridium spark plugs which typically provide stronger, more stable ignition than basic plugs.
- Vehicle‑specific fit reduces fitment guesswork and simplifies installation for SRX owners.
- Aftermarket durability may not exactly match factory replacement lifespan for some users.
- Spark plugs bundled in combo kits have mixed user reports about early wear in a few cases.
Verdict A convenient six‑cylinder ignition coil and iridium plug kit that restores spark performance for Cadillac SRX 3.6L engines, offering strong performance value with some variability in long‑term durability.
Choosing the Right Cadillac SRX Ignition Coil: Key Factors to Consider
Fitment and Connector Compatibility
Correct physical fit and matching electrical connectors are essential because mismatched coils can lead to installation headaches or require adapters. A coil that mounts securely to the OE bracket and uses the factory plug reduces the risk of poor electrical contact and weather exposure.
Verifying fitment also minimizes installation time and the potential for damaging surrounding components. When replacing a coil, confirm mounting points, bracket geometry, and connector type to ensure a seamless swap and reliable long-term operation.
Electrical Output and Resistance
The coil must produce sufficient secondary voltage and have primary and secondary resistance values within the expected range for the engine management system. Proper output ensures consistent spark energy across RPM and load, which helps prevent misfires and rough idling.
Check manufacturer specifications for voltage output and resistance, and prefer coils that match OE electrical characteristics. Mismatched electrical performance can cause weak sparks, triggering diagnostic trouble codes or causing drivability issues.
Thermal and Vibration Durability
Under-hood temperatures and constant vibration put ignition coils under stress. Materials and internal potting quality determine how well a coil resists heat soak and vibration-related failure. Coils designed with high-temperature resistant plastics and robust internal insulation tend to last longer in demanding conditions.
Consider devices with proven thermal ratings and reinforced housings when you expect hot-engine operation or frequent short trips, which can exacerbate heat-related degradation.
Installation Ease and Serviceability
Some coils are designed for straightforward bolt-in replacement while others require additional steps like bracket adjustments or connector swaps. Ease of installation matters if you plan to perform the replacement yourself, as fewer steps reduce the chance of error and shorten downtime.
Also consider whether the coil allows for simple testing and replacement of individual coils without disturbing neighboring components. Design choices that simplify removal and reinstallation are beneficial for routine maintenance.
Compatibility With Diagnostic and Engine Management Systems
Modern engines rely on precise timing and feedback from ignition components. A coil should be compatible with the vehicle's ignition control strategy and not introduce electrical noise or erratic feedback that could confuse the engine control unit. Coils that adhere to expected electrical signatures are less likely to cause false triggers or adaptive timing issues.
If you use on-board diagnostics or aftermarket tuning, choose coils that maintain stable behavior under varying loads so that diagnostic readings remain meaningful and the control system can operate normally.
Warranty and Documentation
Warranty coverage and clear documentation signal manufacturer confidence and help protect your investment in case of early failure. Warranties vary in length and terms, so look for transparent coverage that includes replacement procedures and any required return process.
Technical documents such as part numbers, wiring diagrams, and installation notes ease the selection and replacement process. Good documentation reduces guesswork and supports proper troubleshooting if issues arise after installation.
FAQ
What are common symptoms of a failing ignition coil on a Cadillac SRX?
Common symptoms often include engine misfires, rough idle, difficulty starting, and reduced fuel economy. You may also notice the check engine light illuminate with misfire or ignition-related codes. Symptoms can vary with driving conditions and are sometimes intermittent.
Can I test an ignition coil myself and how accurate is it?
You can perform basic tests such as measuring primary and secondary resistance with a multimeter and checking for spark with a suitable tester. These tests can indicate obvious faults but may not catch intermittent or load-dependent failures. For thorough diagnosis, testing under operating conditions or using a scanner to monitor misfire counts is often more reliable.
Is it necessary to replace all ignition coils at once on the Cadillac SRX?
It often depends on condition and age. Replacing only failed coils can be cost effective, but if multiple coils show wear or the vehicle has high mileage, replacing several at once reduces the chance of repeat failures. Staged replacement is a common approach when budget is a concern.
What should I check if a new coil does not solve the misfire?
If a misfire persists after installing a new coil, check the spark plug condition and gap, plug wires or boots, fuel delivery, and compression in that cylinder. Also verify proper connector engagement and wiring integrity. Intermittent electrical issues and engine mechanical problems can mimic coil failure.
How do I find the correct part number for a Cadillac SRX ignition coil?
Identify the engine variant and model year, then cross-reference those details with manufacturer part listings or service manuals to locate the proper part number. Documentation like wiring diagrams and mounting photos can help confirm you have the right coil for your vehicle.
Is a DIY replacement of an ignition coil feasible for most owners?
Many owners can perform a coil replacement using basic hand tools, especially when coils are accessible and use factory connectors. Take care to disconnect the battery, work on a cooled engine, and follow torque and connector engagement guidelines. If access is limited or you are uncomfortable with diagnostics, professional help is reasonable.
How We Chose the Best Cadillac SRX Ignition Coil
We focused on items that meet the specific fit and connector layout used on the Cadillac SRX, prioritizing direct-fit designs to avoid wiring modifications. Key evaluation criteria included electrical performance under load, build quality and materials, heat and vibration resistance, compatibility with OE mounting points, and warranty or support terms. We also considered ease of installation for common DIY maintenance and availability of technical documentation such as part numbers and wiring diagrams. Products were excluded if they required extensive vehicle-side modifications, lacked clear fitment data for the Cadillac SRX, or did not provide specifications for coil output and thermal tolerance. Our goal was to highlight coils that balance reliable ignition energy, straightforward installation, and long-term durability for everyday use.
Our full evaluation process is outlined in our review methodology.
Conclusion
When choosing an ignition coil for your Cadillac SRX, prioritize correct fitment, matching electrical characteristics, and robust thermal durability. These factors directly affect starting reliability, misfire prevention, and long-term service life. Balance ease of installation and warranty support against the coil's specifications. Addressing underlying ignition system components such as spark plugs and connectors at the same time can reduce the likelihood of repeat issues and extend the life of the replacement coil.
Explore More:
- Check out all Cadillac SRX parts & accessories
- Explore Engine
- Browse all Auto Parts
