HomeSuspension > Suspension, Springs and Related ComponentsUnity 15-514800-HD Air Suspension Spring - Rear
Part #: 15-514800-HD

Unity 15-514800-HD Air Suspension Spring - Rear

Heavy Duty Air Suspension Spring/Bag, Rear
46 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Heavy Duty Air Suspension Spring/Bag, Rear
Fitment: Chevrolet, GMC, Saab, Isuzu, Buick, and Oldsmobile, Trailblazer, Envoy, 9-7x, Ascender, Rainier, Trailblazer EXT, Envoy XL, Envoy XUV, and Bravada
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Unity Heavy Duty Air Suspension Spring/Bag

The Unity Heavy Duty Air Suspension Spring/Bag 15-514800-HD is designed for rear suspension applications on select SUVs and trucks. Engineered to provide reliable support and improved ride quality, this air suspension spring is compatible with various General Motors and related makes.

  • Rear position air suspension spring designed for heavy-duty use
  • Compatible with Buick, Chevrolet, GMC, Isuzu, Oldsmobile, and Saab models
  • Fits specific models including Trailblazer, Envoy, Ascender, and more
  • Part number 15-514800-HD for precise identification
  • Constructed to maintain vehicle height and load capacity under demanding conditions

Product Line Details: Heavy Duty Air Suspension Spring/Bag

The Heavy Duty Air Suspension Spring/Bag line by Unity focuses on durable air springs designed to handle increased loads and provide consistent suspension performance. This product line is tailored for rear suspension systems requiring enhanced support, making it suitable for SUVs and trucks that experience heavy payloads or towing. The 15-514800-HD part is part of this line, ensuring compatibility and durability for rear suspension applications.

Detailed Product Description

This Unity air suspension spring is specifically engineered for rear suspension use on a range of vehicles including the Buick Rainier, Chevrolet Trailblazer and Trailblazer EXT, GMC Envoy series, Isuzu Ascender, Oldsmobile Bravada, and Saab 9-7x. The 15-514800-HD air spring helps maintain proper ride height and suspension stability by compensating for varying loads. It is designed to integrate seamlessly with the vehicle’s existing suspension system, providing consistent air pressure support and improving overall handling and comfort.

Common Applications and Issues Addressed

  • Restores proper rear suspension height on Buick Rainier and Chevrolet Trailblazer models
  • Replaces worn or damaged air springs on GMC Envoy and Envoy XL vehicles
  • Improves load handling and ride stability for Isuzu Ascender and Oldsmobile Bravada
  • Addresses air suspension leaks or failures on Saab 9-7x and Trailblazer EXT
  • Supports towing and heavy payload conditions by maintaining suspension integrity

Installation Notes and Tips

  • Ensure vehicle is securely lifted and supported before removing the old air spring
  • Check for air line connections and fittings compatibility during installation
  • Inspect surrounding suspension components for wear or damage
  • Follow manufacturer torque specifications for mounting hardware
  • Test air suspension system for leaks and proper inflation after installation

Quality Assurance and Warranty

Unity manufactures the 15-514800-HD air suspension spring to meet industry standards for durability and performance. While specific warranty details are not provided here, Unity products typically come with a limited warranty covering defects in materials and workmanship. It is recommended to consult the product packaging or Unity’s official documentation for exact warranty terms.

BrandUnity
Part Number15-514800-HD
PositionHeavy Duty Air Suspension Spring/Bag, Rear
PositionRear

This part fits 46 vehicles. Search below:

YearMakeModelPositionNotes
2009ChevroletTrailblazerRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2009GMCEnvoyRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2009Saab9-7xRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2008ChevroletTrailblazerRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2008GMCEnvoyRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2008IsuzuAscenderRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2008Saab9-7xRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2007BuickRainierRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2007ChevroletTrailblazerRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2007GMCEnvoyRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2007IsuzuAscenderRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2007Saab9-7xRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2006BuickRainierRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2006ChevroletTrailblazerRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2006ChevroletTrailblazer EXTRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2006GMCEnvoyRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2006GMCEnvoy XLRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2006IsuzuAscenderRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2006Saab9-7xRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2005BuickRainierRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2005ChevroletTrailblazerRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2005ChevroletTrailblazer EXTRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2005GMCEnvoyRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2005GMCEnvoy XLRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2005GMCEnvoy XUVRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2005IsuzuAscenderRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2005Saab9-7xRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2004BuickRainierRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2004ChevroletTrailblazerRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2004ChevroletTrailblazer EXTRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2004GMCEnvoyRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2004GMCEnvoy XLRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2004GMCEnvoy XUVRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2004IsuzuAscenderRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2004OldsmobileBravadaRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2003ChevroletTrailblazerRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2003ChevroletTrailblazer EXTRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2003GMCEnvoyRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2003GMCEnvoy XLRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2003IsuzuAscenderRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2003OldsmobileBravadaRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2002ChevroletTrailblazerRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2002ChevroletTrailblazer EXTRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2002GMCEnvoyRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2002GMCEnvoy XLRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag
2002OldsmobileBravadaRearHeavy Duty; Towing; Heavy Duty Air Suspension Spring/Bag

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

1508902815090620151255321515963015183657151836611527602925815604

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.