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 disclosure here.
If your Infiniti G37 is showing loose steering or fluid leakage, selecting the right rack and pinion can restore precise handling and confidence behind the wheel. The right unit affects steering feel, safety, and tire wear, so it is worth matching features and fitment to your vehicle's needs.This guide presents seven shortlisted rack and pinions selected for fit, sealing reliability, and ease of installation. We evaluated mounting compatibility, internal condition, and sealing components to help you narrow options and decide which unit suits your repair or performance goals.
Looking for other parts? See all Infiniti G37 parts & accessories.
Top Picks at a Glance
| Best Overall The best all-around choice for most situations | A-Premium Hydraulic Rack and Pinion Steering Assembly for Infiniti G35/G37 |  |
| Best Quality Built to a higher standard if you want something more solid | AXOMELIEFO Remanufactured Rack and Pinion Assembly for Infiniti G35/G37 (49001JK600) |  |
| Best Value The sweet spot between price and what you get | KAGWFEA Complete Power Steering Rack and Pinion Assembly for Infiniti G35/G37 |  |
| Best Budget The cheapest option that still gets the job done reliably | Garage-Pro Power Steering Rack and Pinion Assembly for Infiniti G37 2009–2011 (RWD, Without EVO) |  |
| Highest Rated A top-rated pick with lots of positive feedback | Detroit Axle Power Steering Rack & Pinion Assembly for Infiniti G35/G37 (RWD) |  |
| Most Popular A crowd favorite that many people choose with confidence | BuyAutoParts Remanufactured Power Steering Rack and Pinion for Infiniti G37/Q60 |  |
1. A-Premium Hydraulic Rack and Pinion Steering Assembly for Infiniti G35/G37
| Vehicle fitment | Infiniti G35 2007-2008; G37 2009-2011 (RWD sedans, left-hand drive) |
|---|---|
| Power type | Hydraulic |
| Includes | Inner tie rods and dust boots |
| Material | Alloy Steel, Aluminum |
| Total turns lock to lock | 3.00 |
This A-Premium rack and pinion is a complete hydraulic steering assembly intended as a direct replacement for RWD Infiniti G35 (2007-2008) and G37 (2009-2011) sedans that used factory hydraulic power steering. It ships with inner tie rods and dust boots so installation covers the common wear items in one unit, and the part includes the specified pressure and return port thread sizes to match factory hydraulic lines. Real-world benefits include restored steering feel and elimination of play from a worn rack without needing to transfer components from the old unit. The unit is aluminum and alloy steel construction which keeps weight reasonable while aiming for durability. Limitations to note are that fitment excludes 4-wheel-steer and sport-suspension variants and it is for left-hand-drive sedans only, so verification of part numbers is required before ordering. The included one-year unlimited-mileage guarantee covers the cost of the item but does not cover installation or related expenses.
Best for: Balanced buyers who want a straightforward, factory-style replacement to restore steering feel on a stock-configuration Infiniti G35/G37 sedan without sourcing multiple parts separately.
Less Ideal for: Drivers with 4-wheel-steer or sport-suspension G35/G37 variants, left-hand-drive requirement mismatches, or those who prefer remanufactured units with extended labor coverage should look elsewhere.
- Complete assembly includes inner tie rods and dust boots for a more complete repair
- Built from alloy steel and aluminum to balance durability and weight
- Spec-matched pressure and return port thread sizes for factory hydraulic lines
- Designed specifically for RWD Infiniti G35/G37 sedans to simplify fitment for those models
- Does not fit 4-wheel-steer or sport-suspension variants and is left-hand-drive only
- Warranty covers only the item cost and excludes installation and related fees
Verdict: A-Premium delivers a ready-to-install hydraulic rack and pinion built to restore steering feel on RWD Infiniti G35/G37 sedans with factory hydraulic steering.
2. AXOMELIEFO Remanufactured Rack and Pinion Assembly for Infiniti G35/G37 (49001JK600)
| Brand | AXOMELIEFO |
|---|---|
| Model | Rack and Pinion Assembly |
| Exterior | Painted |
This remanufactured rack and pinion from AXOMELIEFO replaces the factory steering rack on Infiniti G35 (2007-2008) and G37 (2009-2011) models to restore steering precision and road feel. It is supplied as a complete assembly so installation only requires vehicle-specific mounting and connection; that makes it suitable for both experienced DIYers and professional installers. The listing states the unit was tested to meet strict factory benchmarks and includes improvements intended to address common wear points, which should improve longevity compared with worn original racks. Because it is remanufactured, buyers get a full assembly without sourcing separate components, but fitment must be confirmed against the vehicle compatibility list before purchase. Practical benefits are restored steering response and the convenience of a ready-to-install unit, while limitations are the reliance on the seller's remanufacturing quality and the need for an alignment after installation.
Best for: Performance-oriented owners seeking a high-quality replacement to restore sharp steering feel and handling on their Infiniti G37 while prioritizing steering performance over lowest cost.
Less Ideal for: Buyers who prefer brand-new steering assemblies or need parts for vehicles outside the specified Infiniti G35/G37 model years should look elsewhere.
- Complete remanufactured assembly supplied ready for installation
- Marketed as tested to meet strict factory benchmarks for improved durability
- Covers specific Infiniti G35 (2007-2008) and G37 (2009-2011) fitment to simplify selection
- Remanufactured condition means performance depends on the quality of the rebuild rather than being new
- Listing requires buyers to double-check compatibility which adds a step before purchase
Verdict: A ready-to-install remanufactured rack and pinion built to restore steering precision on targeted Infiniti G35 and G37 models.
3. KAGWFEA Complete Power Steering Rack and Pinion Assembly for Infiniti G35/G37
| Casting Material | Aluminum |
|---|---|
| Input Shaft Diameter (in) | 0.75 |
| Fitment | Infiniti G35 2007-2008; G37 2009-2011 |
| Package Quantity | 1 |
This KAGWFEA complete power steering rack and pinion replaces the factory assembly on Infiniti G35 (2007-2008) and G37 (2009-2011), offering a ready-to-install solution for worn or leaking racks. It is an aluminum-casting unit with a 0.75 inch input shaft diameter and arrives as a single complete unit, so it is typically used during a steering system rebuild or when swapping a damaged rack without sourcing separate hoses or cores. The aluminum casting reduces weight compared with cast-iron alternatives and the complete assembly format speeds installation and reduces garage downtime. Practical buyers will appreciate that it is a direct-replacement style part intended to restore steering feel and eliminate play, but expect that fit and finish can vary between aftermarket suppliers and professional installation is recommended to ensure proper steering alignment and hose routing. This unit is a cost-focused alternative to dealer parts for owners who want a full replacement rather than repairing individual components.
Best for: Practical optimizers who want a full, budget-conscious replacement to get an Infiniti G35/G37 back on the road quickly without paying dealer prices.
Less Ideal for: Owners seeking an OEM-branded part or those who prefer to repair the original rack component-by-component should consider factory replacement or remanufactured options instead.
- Complete assembly arrives ready to install, avoiding the need to rebuild or hunt for separate parts
- Aluminum casting construction reduces mass compared with heavier cast-iron units
- Designed to fit Infiniti G35 (2007-2008) and G37 (2009-2011) to restore steering function
- Includes standard 0.75 inch input shaft diameter to match factory steering column interface
- Aftermarket fit and finish may require adjustments or professional installation to achieve correct alignment
Verdict: A full, cost-focused replacement rack and pinion that gets G35 and G37 steering back to factory-style operation without rebuilding components.
4. Garage-Pro Power Steering Rack and Pinion Assembly for Infiniti G37 2009–2011 (RWD, Without EVO)
| Operation | Power |
|---|---|
| Includes | With inner tie rod end |
| Compatible Models | Infiniti G37 2009-2011 Sedan RWD |
| Manufacturer | Garage-Pro |
This Garage-Pro replacement rack and pinion is a complete power steering assembly intended as a budget-conscious, direct-fit swap for 2009–2011 Infiniti G37 sedans (RWD) that do not have four-wheel steering or the electronic variable orifice component. It ships with the inner tie rod end and is sold individually, so installation typically involves removing the old rack, transferring any serviceable mounts or lines, and bolting the new assembly in place. The unit aims to match factory function and is marketed as built to ISO/TS production standards, which suggests consistent manufacturing. Practical benefits include a ready-to-install complete unit that reduces labor compared with rebuilding a rack and may restore proper steering feel and alignment. Limitations to consider are that this is an aftermarket component rather than a factory part, the listing omits detailed specs like steering gear ratios or exact fittings, and some buyers may prefer a remanufactured factory unit for perceived long-term durability. A one-year unlimited-mileage warranty is offered by the brand.
Best for: Budget-conscious Infiniti G37 owners who prioritize a lower-cost, ready-to-install steering replacement to get a leaking or worn rack fixed quickly without rebuilding or sourcing a remanufactured factory unit.
Less Ideal for: Drivers seeking a factory-refurbished rack with full OEM traceability or those whose G37 has four-wheel steering or an electronic variable orifice component should look for a different part.
- Complete replacement assembly includes inner tie rod end for simpler installation
- Direct-fit design specifically for 2009–2011 Infiniti G37 RWD sedans without four-wheel steering
- Manufactured to ISO/TS production standards according to brand claims
- One-year unlimited-mileage warranty from the seller
- Aftermarket unit with limited published technical details compared with factory or remanufactured racks
- Fitment excludes models with four-wheel steering or EVO components
Verdict: A cost-focused, direct-fit power steering rack assembly that simplifies replacement on RWD Infiniti G37 sedans without four-wheel steering.
5. Detroit Axle Power Steering Rack & Pinion Assembly for Infiniti G35/G37 (RWD)
| Manufacturer | Detroit Axle |
|---|---|
| Manufacturer Part Number | 30238 |
| Fitment | 2007-2008 Infiniti G35 RWD; 2009-2013 Infiniti G37 RWD |
This Detroit Axle rack and pinion is a direct-replacement power steering assembly remanufactured for RWD Infiniti G35 (2007-2008) and G37 (2009-2013) models without rear active steering. It ships as a complete unit ready to install and is hydraulically pressure tested with new oil and lip seals installed to reduce the chance of internal leaks. Typical use is straightforward: swap the worn or leaking factory rack for this assembly to restore steering feel and eliminate play or fluid loss. The lifetime warranty (requires returning the core) adds long-term assurance for reliability-focused buyers. Practical benefits include reduced installation time compared with rebuilding a unit and the backing of a known aftermarket parts brand. Limitations to note are that fitment is specific to RWD G35/G37 configurations and some customers have reported fitment or listing errors, so confirm vehicle details and steering options before ordering. Expect a factory-replacement experience when the part matches the car.
Best for: Reliability-focused owners seeking a factory-replacement steering solution for their Infiniti G37 who prioritize a tested, warrantied assembly over DIY rebuilding.
Less Ideal for: Buyers with modified steering systems, AWD or models with rear active steering should avoid this part and look for a unit specified for their configuration.
- Complete, ready-to-install rack and pinion assembly reduces installation time compared with rebuilding
- Hydraulically pressure tested with new oil and lip seals to reduce the risk of internal leaks
- Lifetime warranty available when core is returned, giving long-term support for reliability
- Specifically remanufactured to match factory steering behavior for the listed Infiniti RWD models
- Fitment is specific to RWD G35/G37 without rear active steering and may not match other configurations
- Some buyers reported incorrect listing details leading to fitment issues
Verdict: A tested, remanufactured complete rack and pinion that restores factory steering feel for RWD Infiniti G35/G37 owners who want a dependable replacement.
6. BuyAutoParts Remanufactured Power Steering Rack and Pinion for Infiniti G37/Q60
| Manufacturer | BuyAutoParts |
|---|---|
| Model | Rack and Pinion |
| Exterior | Painted |
| Item model number | 80-01734NS |
This remanufactured rack and pinion replaces the complete steering assembly on 2008–2010 Infiniti G37 and 2014 Q60 rear‑wheel‑drive coupe models without rear active steering. It arrives as a fully rebuilt unit with painted exterior and factory-style mounting points so installation follows the OEM routing and hardware. The unit is factory-quality remanufactured using inspected internal components and is advertised as tested for proper operation before shipping, which reduces bench rebuild work and diagnostic time for a convenience-focused buyer. Typical use is a direct replacement for a leaking, noisy, or play-prone steering rack to restore steering feel and eliminate fluid leaks. The product notes easy install fitment and multiple warehouse distribution for quicker delivery. Limitations are that it fits only specific RWD coupe configurations and is a remanufactured part rather than new, so buyer should expect used-core origins and variability in cosmetic finish despite functional refurbishment.
Best for: Convenience-driven buyers who want a ready-to-install steering rack that minimizes workshop labor and troubleshooting when replacing a failing unit on an Infiniti G37 or Q60 RWD coupe.
Less Ideal for: Buyers seeking a brand-new OEM-manufactured steering rack or those with Infiniti models that have rear active steering should look for alternative options.
- Direct-fit replacement for specified Infiniti G37 (2008–2010) and Q60 (2014) RWD coupe models without rear active steering
- Comes fully remanufactured and tested to reduce installation troubleshooting
- Painted exterior and OEM-style mounting points simplify installation and appearance
- Backed by vendor inspection and factory-style quality controls for durability
- Remanufactured unit rather than brand-new so internal component history may vary
- Fitment is limited to specific RWD coupe models and excludes vehicles with rear active steering
Verdict: A remanufactured, tested direct-fit rack and pinion built to replace the factory steering assembly on specified Infiniti G37 and Q60 RWD coupes.
Choosing the Right Infiniti G37 Rack and Pinion: Key Factors to Consider
Fitment and Mounting Compatibility
Correct fitment is the baseline for a trouble-free replacement. A rack and pinion that matches the Infiniti G37's mounting points, steering input spline, and tie-rod interface reduces the need for modifications and ensures alignment geometry remains close to factory settings.
If fitment is off, you can encounter binding, incorrect steering ratio, or unusual tire wear. Confirming mounting hole patterns and input shaft type limits surprises during installation and keeps labor and adjustment time down.
Seal and Boot Quality
Seals and dust boots protect internal components from fluid loss and contamination. High-quality seals resist line pressure and temperature cycles, while durable boots prevent dirt and moisture ingress that accelerate wear.
Poor sealing leads to rack and pinion leak repair sooner than expected and can allow abrasive particles to score gear surfaces. Inspecting seal materials and boot thickness helps predict long-term reliability, especially in climates with road salt or gravel.
Internal Gear Tolerances and Steering Feel
The internal mesh between the pinion and the rack determines steering precision and center feel. Tighter tolerances typically produce crisper steering with less steering rack steering play, while looser tolerances can result in vagueness and more free play at the wheel.
For drivers seeking responsive steering, look for units specified to tight internal clearances or factory remanufactured to those standards. For street-driven vehicles, a balance between precision and smooth operation often delivers the most comfortable experience.
Hydraulic Vs Electric Assistance and Hose Interfaces
Understanding whether the unit is compatible with the Infiniti G37's power-assist system is essential. Hydraulic racks require correct hose connections and pressure ratings; mismatches can cause steering effort issues or fluid leaks. Electric units have different mounting and electrical interfaces.
Ensure hose fittings, banjo bolt patterns, and pressure ratings match the vehicle. For hydraulic racks, check that included ports and plumbing do not introduce potential leak points that would lead to steering rack noise or loss of assist.
Serviceability and Rebuild Potential
Some rack and pinions are designed to be rebuilt, with replaceable seals, bushings, and inner components. Choosing a unit that can be serviced reduces long-term ownership costs and allows technicians to address steering issues without full replacement.
If you anticipate keeping the Infiniti G37 long term, prioritize units with documented rebuild procedures, available rebuild kits, and accessible components. This also supports future power rack and pinion rebuild work if wear appears.
Included Hardware and Ease of Installation
Units that come with necessary hardware, such as mounting bolts, new tie-rod ends, and hoses, simplify installation and reduce the chance of missing parts during replacement. Clear instructions and common-sense packaging can shorten shop time and lower installation errors.
Consider whether the rack and pinion installation will require steering alignment adjustments, specialized tools, or bracket modifications. Units that minimize additional steps help get the vehicle back on the road sooner and reduce the risk of installation-related steering symptoms.
How We Chose the Best Infiniti G37 Rack and Pinion
To compile this list we focused on items that meet Infiniti G37 factory fitment and mounting specifications to minimize installation complications. Key selection criteria included precise mounting and tie-rod interface, seal and boot quality to reduce leak and contamination risk, and internal gear tolerances that influence steering feel and play.We also assessed the condition and design of input and output shaft splines for smooth engagement, the accessibility of serviceable parts for future rebuilds, and the quality of included hardware such as hoses, clamps, and brackets. Units that required extensive modification or did not meet OEM mounting points were excluded. We omitted any items with unclear fitment data, missing sealing components, or signs of excessive internal wear. The result is a shortlist focused on correct fit, durability, and predictable steering performance for the Infiniti G37.
Our full evaluation process is outlined in our review methodology.
FAQ
What are common steering rack symptoms on an Infiniti G37?
Common symptoms often include steering play or looseness, uneven tire wear, difficulty maintaining a straight line, power assist loss, or fluid dripping near the rack. You may also notice steering rack noise such as grinding or clunking that grows with steering input.
Can a leaking rack be repaired or should it be replaced?
It depends on the leak source and the unit's overall condition. Minor seal leaks may be addressed with targeted seal replacement if the rack is otherwise structurally sound. If there is significant internal wear, bent components, or repeated leaks, replacement is usually the more reliable option.
How disruptive is rack and pinion installation on an Infiniti G37?
Installation typically involves removing steering linkage, disconnecting hydraulic lines if applicable, and unbolting the rack from subframe mounts. It often requires a wheel alignment afterward. With proper tools and correct fitment, the process is straightforward for a trained technician, but it can be time consuming for a DIYer.
What causes steering rack noise and how can it be diagnosed?
Noise can come from worn bushings, contaminated fluid, failing seals, or internal gear wear. Diagnosis usually starts with visual inspection for leaks or damaged boots, checking fluid condition, and testing for play at the input shaft and tie-rod ends. Road and steering-load tests help pinpoint when the noise occurs.
Is a rebuilt power rack and pinion a reliable option?
A properly rebuilt unit can be reliable if rebuilds follow factory tolerances and use quality seals and components. The reliability depends on the rebuilder's processes, the replacement parts used, and whether wear elsewhere in the steering system is also addressed.
Conclusion
Prioritize correct fitment, seal integrity, and internal tolerances when choosing a rack and pinion for an Infiniti G37. Those factors most directly influence steering precision, leak resistance, and long-term durability.Balance the desire for tight steering feel against potential noise or harshness, and consider serviceability if you expect to maintain the vehicle long term. Ensuring correct mounting, hose connections, and post-installation alignment will minimize surprises and restore confident steering performance.
Explore More:
- Check out all Infiniti G37 parts & accessories
- Explore Rack and Pinion Steering Systems Maintenance & Repair Guides
- Explore Suspension & Steering
- Browse all Auto Parts
