OE Quality
60-Day Returns

Apex AHS3085 Engine Cylinder Head Gasket Set
Reliable Engine Cylinder Head Gasket Set for GM and Isuzu Vehicles
The Apex AHS3085 engine cylinder head gasket set is designed to provide a precise seal for your engine, ensuring optimal performance and durability. Compatible with a range of Cadillac, Chevrolet, GMC, and Isuzu models, this gasket set is engineered to meet the demands of your vehicle's engine.
- Complete engine cylinder head gasket set for comprehensive sealing
- Compatible with Cadillac Escalade, Chevrolet Silverado 1500, GMC Sierra 1500, and Isuzu Ascender
- Part number AHS3085 for easy identification and ordering
- Engineered to maintain proper compression and prevent leaks
- Durable materials designed to withstand high temperatures and pressures
Durable Construction and Precise Fitment
The Apex AHS3085 gasket set is manufactured to exact specifications to ensure a proper fit on multiple GM and Isuzu vehicles, including the Chevrolet Avalanche 1500, GMC Yukon XL 1500, and Cadillac Escalade. This gasket set helps maintain engine integrity by providing a reliable seal between the cylinder head and engine block, preventing coolant, oil, and combustion gases from leaking. Its durable construction supports long-term engine performance under demanding conditions.
Compatible Vehicles and Applications
This engine cylinder head gasket set is compatible with the following makes and models:
- Cadillac Escalade
- Chevrolet Avalanche 1500, Silverado 1500, Suburban 1500, Tahoe, Trailblazer EXT, SSR
- GMC Sierra 1500, Yukon, Yukon XL 1500
- Isuzu Ascender, Envoy XL
- Chevrolet Express 1500, 2500, 3500 and GMC Savana 1500, 2500, 3500
Common Engine Issues Addressed
- Prevents head gasket leaks causing coolant or oil contamination
- Maintains engine compression for consistent power output
- Reduces risk of engine overheating due to sealing failures
- Helps avoid exhaust gas leaks that can affect emissions and performance
- Supports engine longevity by ensuring proper sealing under pressure
Installation Notes and Tips
When installing the Apex AHS3085 cylinder head gasket set, ensure the cylinder head and engine block surfaces are clean and free of debris. Follow manufacturer torque specifications for head bolts to avoid warping or gasket damage. It is recommended to replace all gaskets in the set simultaneously to maintain optimal sealing performance.
Quality Assurance and Warranty
Apex manufactures the AHS3085 gasket set to meet industry standards for durability and fitment. While specific warranty details are not provided, Apex products typically undergo rigorous quality control to ensure reliability in automotive applications.
This part fits 26 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2003 | Cadillac | Escalade | 5.3L | V8 | N/A | ||
| 2003 | Chevrolet | Avalanche 1500 | 5.3L | V8 | N/A | ||
| 2003 | Chevrolet | Express 1500 | 5.3L | V8 | N/A | ||
| 2003 | Chevrolet | Express 2500 | 4.8L | V8 | N/A | ||
| 2003 | Chevrolet | Express 3500 | 4.8L | V8 | N/A | ||
| 2003 | Chevrolet | Silverado 1500 | 4.8L | V8 | N/A | ||
| 2003 | Chevrolet | SSR | 5.3L | V8 | N/A | ||
| 2003 | Chevrolet | Suburban 1500 | 5.3L | V8 | GAS | N/A | |
| 2003 | Chevrolet | Tahoe | 4.8L | V8 | N/A | ||
| 2003 | Chevrolet | Trailblazer EXT | 5.3L | V8 | N/A | ||
| 2003 | GMC | Envoy XL | 5.3L | V8 | N/A | ||
| 2003 | GMC | Savana 1500 | 5.3L | V8 | N/A | ||
| 2003 | GMC | Savana 2500 | 4.8L | V8 | N/A | ||
| 2003 | GMC | Savana 3500 | 4.8L | V8 | N/A | ||
| 2003 | GMC | Sierra 1500 | 4.8L | V8 | N/A | ||
| 2003 | GMC | Yukon | 4.8L | V8 | N/A | ||
| 2003 | GMC | Yukon XL 1500 | 5.3L | V8 | GAS | N/A | |
| 2003 | Isuzu | Ascender | 5.3L | V8 | N/A | ||
| 2002 | Cadillac | Escalade | 5.3L | V8 | N/A | ||
| 2002 | Chevrolet | Avalanche 1500 | 5.3L | V8 | N/A | ||
| 2002 | Chevrolet | Silverado 1500 | 4.8L | V8 | N/A | ||
| 2002 | Chevrolet | Suburban 1500 | 5.3L | V8 | GAS | N/A | |
| 2002 | Chevrolet | Tahoe | 4.8L | V8 | N/A | ||
| 2002 | GMC | Sierra 1500 | 4.8L | V8 | N/A | ||
| 2002 | GMC | Yukon | 4.8L | V8 | N/A | ||
| 2002 | GMC | Yukon XL 1500 | 5.3L | V8 | GAS | N/A |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.