Gates 1999-2004 Jeep Grand Cherokee 4.0L & 4.7L Thermostat Gasket
The Gates 33638 is the #1 selling direct-replacement thermostat gasket for every 1999-2004 Jeep Grand Cherokee WJ with 4.0L inline-6 or 4.7L V8 engines. Precision-cut from premium high-temperature material for a perfect leak-free seal every time.
Key Features
Premium Construction: Made from robust, heat-resistant material designed for long-lasting performance under extreme engine temperatures.
OEM Quality: Manufactured to meet or exceed factory specifications for perfect fitment and function.
Leak Protection: Provides a tight, uniform seal to prevent coolant loss and overheating.
Easy Installation: Direct replacement for factory gasket no modification required.
Trusted Brand: Gates is the world’s leading OE supplier of cooling system components.
Specifications
| Specification | Detail |
|---|---|
| Part Number | 33638 |
| Position | Thermostat Housing |
| Material | High-Temp Composite |
| Engine | 4.0L I6 & 4.7L V8 |
| Country of Origin | United States |
| Warranty | Limited Lifetime |
Product Notes
- Fits all 1999–2004 Grand Cherokee WJ (Laredo, Limited, Overland, etc.)
Installation Notes
- Installation Time: Under 30 minutes with basic tools
- Always replace when installing a new thermostat
This Part Fits
| Year | Make | Model | Notes |
|---|---|---|---|
| 1999-2004 | Jeep | Grand Cherokee | 4.0L or 4.7L engines |
Why Choose Gates?
- World’s #1 OE cooling system manufacturer
- Engineered and tested to exceed factory standards
- Trusted by professional mechanics for over 100 years
Frequently Asked Questions
- Q: Will this fit 2005+ WK models?
- A: No, only fits 1999-2004 WJ platform.
- Q: Is the thermostat included?
- A: No, gasket only.
- Q: Can I reuse the old gasket?
- A: Never reuse always install new for reliable seal.
Shipping & Handling
- Method: UPS/FedEx Ground
- Availability: Typically In stock ships same or next business day
- Packaging: Official Gates retail packaging
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