DETROIT AXLE 2GS472977 Power Steering Gear Box Idler Arm K6390

( Brand: Detroit Axle ), ( Manufacturer Part Number: 2GS472977 ), ( Type: Gearbox Kit ), ( Ipn: K6390 1416gb ), ( Manufacturer Warranty: Lifetime ), ( Surface Finish: Polished, Rust Protected ), ( Country Of Origin: United States )

Review DETROIT AXLE Power Steering Gear Box Idler Arm Chevy Gmc fits SUBURBAN K2500 C2500 K3500 C3500

The **Detroit Axle 2GS472977 Power Steering Gear Box Idler Arm** is a precision-engineered, heavy-duty component designed exclusively for the robust front-wheel-drive systems found in select Chevrolet and GMC full-size trucks, including the legendary **K2500, C2500 Suburban, K3500, and C3500** models. Crafted from high-strength, heat-treated steel, this idler arm serves as a critical linkage in the power steering gearbox assembly, ensuring smooth and responsive steering control while withstanding the relentless demands of heavy-duty towing, off-road adventures, and daily highway commutes. Engineered to fit seamlessly with the **Detroit Axle 2GS472977 power steering gearbox**, this idler arm features a robust, reinforced design that minimizes wear and tear, reducing the risk of premature failure and costly repairs. Its durable construction includes precision-machined bearings and bushings, which are designed to maintain optimal alignment and reduce friction, thereby enhancing steering efficiency and longevity. Whether navigating tight city streets, hauling heavy loads, or tackling rugged terrain, this idler arm delivers consistent performance, making it an indispensable upgrade for truck owners seeking reliability and durability. Backed by Detroit Axle s reputation for quality and engineering excellence, this component is a direct-fit replacement that restores factory-like precision to your vehicle s steering system, ensuring a smoother, more controlled driving experience.

**Pros and Cons of Buying a Detroit Axle 2GS472977 Power Steering Gear Box with Idler Arm for Chevy/GMC K-Series Trucks (K2500, C2500, Suburban, K3500, C3500)**

### **Pros**

1. **OEM Quality and Compatibility** The Detroit Axle (now part of Dana Incorporated) is a trusted manufacturer of heavy-duty drivetrain components. This gearbox and idler arm are designed specifically for Chevy/GMC K-series trucks, ensuring a proper fit and reliable performance.

2. **Durability and Performance** Built to withstand the demands of heavy-duty towing and hauling, this component is constructed with robust materials and precision engineering, reducing the risk of premature failure compared to aftermarket knockoffs.

3. **Warranty Coverage** Many Detroit Axle parts come with manufacturer warranties (typically 12 months or more), providing peace of mind against defects in materials or workmanship.

4. **Easier Maintenance and Replacement** Since it s an OEM or high-quality replacement part, finding installation guides, diagnostic help, and compatible accessories (like seals, fluid, or mounts) is straightforward.

5. **Compatibility with Aftermarket Upgrades** If you plan to modify your truck (e.g., lift kits, larger tires, or performance steering systems), this gearbox is a solid foundation that can integrate well with aftermarket components.

6. **Reduced Steering Play and Smooth Operation** A properly functioning power steering gearbox and idler arm ensure tighter steering response, which is crucial for heavy-duty vehicles.

7. **Resale Value Preservation** Using genuine or high-quality replacement parts helps maintain the truck s value, especially if you plan to sell it later.

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### **Cons**

1. **Higher Upfront Cost** Compared to some aftermarket alternatives, Detroit Axle parts can be more expensive. Prices typically range between **$300 $600** depending on the retailer and whether it s new or refurbished.

2. **Potential Counterfeit or Low-Quality Replicas** Buying from untrusted sellers (e.g., eBay, Facebook Marketplace, or unknown online stores) may result in counterfeit or substandard parts that fail prematurely. Always verify the seller s reputation and part authenticity.

3. **Installation Complexity** While not extremely difficult, replacing a power steering gearbox and idler arm requires some mechanical skill, especially if you re unfamiliar with steering systems. If you re not comfortable with the job, labor costs at a shop can add **$150 $300** to the total expense.

- **Power steering fluid** (if draining the system)

- **New seals or boots** (to prevent leaks)

- **Mounting hardware** (if bolts are stripped or missing)

- **Idler arm bushings** (if worn)

These extras can increase the total cost.

5. **Potential Hidden Issues** If the gearbox or idler arm was damaged by a previous failure (e.g., seized bearings, cracked housing), the underlying cause (e.g., fluid contamination, misalignment) may persist unless addressed.

6. **Limited Availability in Some Regions** Depending on where you live, finding a reputable dealer for Detroit Axle parts may require ordering online, which could delay repairs.

---

### **Conclusion**

The **Detroit Axle 2GS472977 Power Steering Gear Box with Idler Arm** is a **high-quality, reliable choice** for Chevy/GMC K-series trucks, especially if you prioritize durability, OEM compatibility, and long-term performance. While it comes at a higher cost than some aftermarket options, the trade-off in reliability and ease of maintenance often justifies the investment.

However, if budget is a major concern, **carefully vetted aftermarket alternatives** (from brands like **Mopar, ACDelco, or reputable third-party suppliers**) can offer comparable performance at a lower price **as long as you verify authenticity and quality**. Always buy from **authorized dealers, trusted online retailers (RockAuto, Summit Racing), or reputable local shops** to avoid counterfeit parts.

### **Recommendation**

- **If you want the best long-term solution and can afford it**, purchase the **genuine Detroit Axle part** from a trusted source (e.g., **RockAuto, Summit Racing, or a local Chevy/GMC dealer**). Ensure the seller provides a warranty and proper documentation.

- **If you re on a tighter budget**, consider a **high-quality aftermarket alternative** (e.g., **ACDelco GM 94571300** or **Mopar 94571300**) from a well-known brand, but **double-check compatibility and reviews** to confirm reliability.

- **If you re unsure about installation**, have a **mechanic inspect the steering system first** to identify whether the gearbox or idler arm is the sole issue (or if other components, like the steering rack or fluid, need attention).

- **Always replace associated parts** (seals, mounts, fluid) during installation to prevent future failures.

**Final Verdict:** For most heavy-duty K-series truck owners, the **Detroit Axle part is the safest and most durable option**, but careful sourcing and installation are key to maximizing its lifespan.

Details:

Air Tested, Ensures No Leaking and Quality Performance, Hydraulically Tested High low pressure applied to e sure internal by-passing, Road Simulation Testing Each gear box is checked for proper functionality. With an OE design, simple installation and long life as a guarantee. Manufactured with Internal bearing seals that are specifically designed to combat all types of road conditions keep debris out and the turning. Manufacturer Information.

MAKE model YEAR RANGESPECIFIC DETAILS, CHEVROLETC2 8 Bolt Wheels, CHEVROLETC2500 SUBURBAN1992All model's, CHEVROLETC3 All CHEVROLETK2 8 CHEVROLETK2500 CHEVROLETK3 All GMCC2 8 GMCC2500 GMCC3 All GMCK2 8 GMCK2500 GMCK3 All model's. Provides extensive coverage of bearings for a broad range automotive and heavy-duty 4x4 wheel applications. Brand Information. Manufactured in ISO 9000 / 9001 9002 certified facilities gives the fit, performance Reliability and durability of OE.

Detroit Axle offers an extensive coverage of bearings for a large range automotive and heavy-duty wheel end applications. Return your old Gear Box to activate Lifetime Warranty. Not what you were looking for. Search our to find the right part.

Detroit Axle products deliver the look, feel, fit and performance of OE. Gear Box Re-manufacturing Information.

part #: 2gs472977 prices

• $39.12-$111.05

specifications pitmanidlear:

• for models: K2500, C2500, K3500, C3500, Suburban
• for makes: Chevy, Gmc
• brand: Detroit Axle
• mpn: 2gs472977
• type: Gearbox Kit
• ipn: K6390 1416gb
• manufacturer warranty: Lifetime
• surface finish: Polished, Rust Protected
• country of origin: United States

shipping pitmanidlear:

• transit: 3-3 Days
• type: Fixed
• class: Expedited
• service: Expedited
• cost: $0.00

payments pitmanidlear:

• wallet: Apple-pay
• credit card: Visa
• other

general pitmanidlear:

• Car Truck Parts Accessories > Steering Suspension > Gearboxes, Rack Pinions
• condition: New other see details

offer pitmanidlear:

• quantity: 6
• sold: 0
• options: Ship-to-home
• availability: In Stock
• started: March 25, 2026

seller pitmanidlear:

• rating: 99.6%
• city: Detroit, Michigan
• # reviews: 1417596

returns pitmanidlear:

• paid by: Seller
• policy: Returns Accepted
• time: 30 Days

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