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Delphi TC6503 Suspension Coil Spring Seat - Rear Lower
| Brand | Delphi TC6503 |
|---|---|
| Position | Rear Lower |
| Color | Black |
| Inside Diameter | 4.79 |
| Inside Diameter | 121.7 |
| Item Grade | Standard Replacement |
| Material | Rubber |
| Outside Diameter | 7.48 |
| Outside Diameter | 190.0 |
| Fits | Chevrolet, Buick, Pontiac, and Oldsmobile · 81 vehicles |
OE expertise. Delphi applies OE know-how to aftermarket steering and suspension parts.
Rubber construction. Provides a resilient coil spring seat with a standard replacement fit.
Standard replacement. A direct-fit suspension coil spring seat for dependable service.
Cross-references 10221915 and 10286793 for the same application. See all 2.
Delphi TC6503 Rear Lower Coil Spring Seat
Delphi TC6503 is a standard replacement suspension coil spring seat made from rubber for the rear lower position. It is built for direct-fit service on a wide range of GM vehicles, including Chevrolet Impala, Buick LaCrosse, and Pontiac Grand Prix applications.
OE-focused material and dimensional analysis help support proper compatibility with the original suspension layout. Delphi TC6503 is a practical choice when replacing a worn rear lower coil spring seat on vehicles that need consistent spring support and quiet operation.
Key Features
- Rubber construction for the rear lower suspension position
- Black finish
- Standard replacement grade
- Inside diameter: 121.7 mm (4.79 in.)
- Outside diameter: 190.0 mm (7.48 in.)
- Delphi TC6503 part number for catalog and service reference
Detailed Description
Delphi TC6503 is a rear lower suspension coil spring seat engineered for OE-style fitment and material consistency. Delphi applies dimensional and material analysis to help match the original part profile, and its OE validation process includes exposure to extreme temperatures and salt spray testing. That focus on fit and durability makes this coil spring seat a strong match for service work on Chevrolet Impala, Buick LaCrosse, Buick Allure, Pontiac Grand Prix, Chevrolet Monte Carlo, Buick Century, Buick Regal, Oldsmobile Intrigue, and Chevrolet Lumina platforms.
This part cross-references OE numbers 10221915 and 10286793 for the same application. If you are replacing a worn or deteriorated rear lower spring seat, Delphi TC6503 provides the correct form factor for the suspension location specified by the vehicle fitment.
Vehicle Fitment
- Fits 2014-2016 Chevrolet Impala Limited, rear lower
- Fits 2000-2013 Chevrolet Impala, rear lower
- Fits 2005-2009 Buick Allure, rear lower
- Fits 2005-2009 Buick LaCrosse, rear lower
- Fits 1997-2008 Pontiac Grand Prix, rear lower
- Fits 1995-2007 Chevrolet Monte Carlo, rear lower
- Fits 1997-2005 Buick Century, rear lower
- Fits 1997-2004 Buick Regal, rear lower
- Fits 1998-2002 Oldsmobile Intrigue, rear lower
- Fits 1995-2001 Chevrolet Lumina, rear lower
What It Helps Address
- Rear suspension noise caused by a worn spring seat
- Loss of proper spring support at the rear lower position
- Rubber deterioration from age, heat, and road exposure
- Fitment issues when replacing an OE-style coil spring seat
- Uneven suspension contact at the spring mounting point
Installation Notes and Tips
Verify the rear lower position and compare the original seat dimensions before installation. Inspect the surrounding spring and suspension components for wear, corrosion, or damage so the replacement seat can seat correctly and maintain proper alignment. Confirm vehicle fitment by year, make, model, and position before ordering.
Quality Assurance
Delphi uses OE-based engineering practices, including dimensional and material analysis, to support consistent aftermarket fitment. The part is tested across extreme temperature ranges and salt-spray exposure to evaluate durability in service conditions.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2016 | Chevrolet | Impala Limited | Rear Lower | — |
| 2015 | Chevrolet | Impala Limited | Rear Lower | — |
| 2014 | Chevrolet | Impala Limited | Rear Lower | — |
| 2013 | Chevrolet | Impala | Rear Lower | — |
| 2012 | Chevrolet | Impala | Rear Lower | — |
| 2011 | Chevrolet | Impala | Rear Lower | — |
| 2010 | Chevrolet | Impala | Rear Lower | — |
| 2009 | Buick | Allure | Rear Lower | — |
| 2009 | Buick | LaCrosse | Rear Lower | — |
| 2009 | Chevrolet | Impala | Rear Lower | — |
| 2008 | Buick | Allure | Rear Lower | — |
| 2008 | Buick | LaCrosse | Rear Lower | — |
| 2008 | Chevrolet | Impala | Rear Lower | — |
| 2008 | Pontiac | Grand Prix | Rear Lower | — |
| 2007 | Buick | Allure | Rear Lower | — |
| 2007 | Buick | LaCrosse | Rear Lower | — |
| 2007 | Chevrolet | Impala | Rear Lower | — |
| 2007 | Chevrolet | Monte Carlo | Rear Lower | — |
| 2007 | Pontiac | Grand Prix | Rear Lower | — |
| 2006 | Buick | Allure | Rear Lower | — |
| 2006 | Buick | LaCrosse | Rear Lower | — |
| 2006 | Chevrolet | Impala | Rear Lower | — |
| 2006 | Chevrolet | Monte Carlo | Rear Lower | — |
| 2006 | Pontiac | Grand Prix | Rear Lower | — |
| 2005 | Buick | Allure | Rear Lower | — |
| 2005 | Buick | Century | Rear Lower | — |
| 2005 | Buick | LaCrosse | Rear Lower | — |
| 2005 | Chevrolet | Impala | Rear Lower | — |
| 2005 | Chevrolet | Monte Carlo | Rear Lower | — |
| 2005 | Pontiac | Grand Prix | Rear Lower | — |
| 2004 | Buick | Century | Rear Lower | — |
| 2004 | Buick | Regal | Rear Lower | — |
| 2004 | Chevrolet | Impala | Rear Lower | — |
| 2004 | Chevrolet | Monte Carlo | Rear Lower | — |
| 2004 | Pontiac | Grand Prix | Rear Lower | — |
| 2003 | Buick | Century | Rear Lower | — |
| 2003 | Buick | Regal | Rear Lower | — |
| 2003 | Chevrolet | Impala | Rear Lower | — |
| 2003 | Chevrolet | Monte Carlo | Rear Lower | — |
| 2003 | Pontiac | Grand Prix | Rear Lower | — |
| 2002 | Buick | Century | Rear Lower | — |
| 2002 | Buick | Regal | Rear Lower | — |
| 2002 | Chevrolet | Impala | Rear Lower | — |
| 2002 | Chevrolet | Monte Carlo | Rear Lower | — |
| 2002 | Oldsmobile | Intrigue | Rear Lower | — |
| 2002 | Pontiac | Grand Prix | Rear Lower | — |
| 2001 | Buick | Century | Rear Lower | — |
| 2001 | Buick | Regal | Rear Lower | — |
| 2001 | Chevrolet | Impala | Rear Lower | — |
| 2001 | Chevrolet | Lumina | Rear Lower | — |
| 2001 | Chevrolet | Monte Carlo | Rear Lower | — |
| 2001 | Oldsmobile | Intrigue | Rear Lower | — |
| 2001 | Pontiac | Grand Prix | Rear Lower | — |
| 2000 | Buick | Century | Rear Lower | — |
| 2000 | Buick | Regal | Rear Lower | — |
| 2000 | Chevrolet | Impala | Rear Lower | — |
| 2000 | Chevrolet | Lumina | Rear Lower | — |
| 2000 | Chevrolet | Monte Carlo | Rear Lower | — |
| 2000 | Oldsmobile | Intrigue | Rear Lower | — |
| 2000 | Pontiac | Grand Prix | Rear Lower | — |
| 1999 | Buick | Century | Rear Lower | — |
| 1999 | Buick | Regal | Rear Lower | — |
| 1999 | Chevrolet | Lumina | Rear Lower | — |
| 1999 | Chevrolet | Monte Carlo | Rear Lower | — |
| 1999 | Oldsmobile | Intrigue | Rear Lower | — |
| 1999 | Pontiac | Grand Prix | Rear Lower | — |
| 1998 | Buick | Century | Rear Lower | — |
| 1998 | Buick | Regal | Rear Lower | — |
| 1998 | Chevrolet | Lumina | Rear Lower | — |
| 1998 | Chevrolet | Monte Carlo | Rear Lower | — |
| 1998 | Oldsmobile | Intrigue | Rear Lower | — |
| 1998 | Pontiac | Grand Prix | Rear Lower | — |
| 1997 | Buick | Century | Rear Lower | — |
| 1997 | Buick | Regal | Rear Lower | — |
| 1997 | Chevrolet | Lumina | Rear Lower | — |
| 1997 | Chevrolet | Monte Carlo | Rear Lower | — |
| 1997 | Pontiac | Grand Prix | Rear Lower | — |
| 1996 | Chevrolet | Lumina | Rear Lower | — |
| 1996 | Chevrolet | Monte Carlo | Rear Lower | — |
| 1995 | Chevrolet | Lumina | Rear Lower | — |
| 1995 | Chevrolet | Monte Carlo | Rear Lower | — |
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