GATES SX-9630 Fuel Tank Cap Je 4.1L 4.3L 4.8L 5.0L 5.7L 6.2L

( Brand: Gates ), ( Manufacturer Part Number: SX-9630 ), ( Type: Fuel Tank Cap ), ( Placement On Vehicle: Air Fuel Delivery Hardware Fasteners Fittings ), ( Item Width: 3.630 ), ( Item Height: 3.000 ), ( Manufacturer Warranty: Recommended Service Interval ), ( Ipn: C441 65-23 ), ( Compatible Year: 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement ), ( Bundle Description: 1 Pc Genuine Gates Fuel Tank Cap )

Review GATES Fuel Tank Cap Gmc 4.1l 4.3l 4.8l 5.0l 5.7l 6.2l Je fits C2500 1979–2000

The **Gates SX-9630 Fuel Tank Cap** is a meticulously engineered, high-performance replacement part designed specifically for **1979 2000 GMC C2500** models equipped with a **4.1L, 4.3L, 4.8L, 5.0L, 5.7L, or 6.2L V8 engine**, including the legendary **Oldsmobile 350, 400, and 455** powerplants found in these robust workhorses. Crafted from **durable, corrosion-resistant materials**, this fuel cap is built to withstand the harshest conditions, ensuring a secure and reliable seal that prevents fuel vapors from escaping while maintaining optimal pressure within the fuel system. The **precision-machined threads** and **tight-fitting gasket** guarantee a leak-proof connection, reducing the risk of fuel loss, vapor leaks, and potential engine performance issues. Beyond its functional excellence, the **Gates SX-9630** features a **sleek, high-quality finish** that blends seamlessly with the original equipment design, restoring both form and function to your vehicle s fuel system. Whether you re restoring a classic C2500 for daily driving or maintaining a high-mileage work truck, this cap delivers **superior durability, easy installation, and peace of mind**, ensuring your fuel system operates at peak efficiency for years to come. Built to meet or exceed OEM specifications, it s the ideal choice for enthusiasts and professionals who demand nothing less than the best in aftermarket performance parts.

**Pros and Cons of buying a Gates SX-9630 Fuel Tank Cap for 1979 2000 GMC C2500 (4.1L 6.2L V8 Engines)**

### **Pros**

1. **Compatibility** The Gates SX-9630 is specifically designed for the 1979 2000 GMC C2500 series with the listed engine sizes (4.1L 6.2L V8). This ensures a proper fit without modifications, reducing the risk of leaks or improper sealing.

2. **High-Quality Material** Gates is a well-known brand in automotive aftermarket parts, known for durable materials like rubber and metal components that resist wear, cracking, and fuel vapor leakage over time.

3. **Seal Integrity** The cap features a reliable gasket system that helps prevent fuel fumes from escaping, improving fuel efficiency and reducing environmental pollution. This is particularly important for older vehicles prone to vapor leaks.

4. **Easy Installation** The design is straightforward, requiring basic tools (no special equipment). Most users can replace it in under 30 minutes, even without mechanical experience.

5. **Prevents Contamination** A properly sealed fuel cap keeps debris, moisture, and contaminants out of the fuel system, protecting the fuel pump and injectors from damage.

6. **OEM Replacement Option** If the original cap failed, this is a direct replacement that maintains the vehicle s intended performance and emissions compliance.

7. **Widely Available** Gates parts are stocked by most auto parts stores (AutoZone, O Reilly, RockAuto) and online retailers, ensuring easy availability.

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### **Cons**

1. **Price Point** While not excessively expensive, it may be more costly than generic or no-name alternatives. For budget-conscious buyers, cheaper options exist, though with potential trade-offs in quality.

2. **Potential for Counterfeit Products** Purchasing from untrusted sellers (especially online) could result in counterfeit or low-quality fakes. Always buy from reputable dealers or verified sellers.

3. **Stiffness Over Time** Some users report that the rubber gasket can become brittle with age, especially in extreme temperatures. This may require periodic inspection or replacement.

4. **Thread Wear on Tank** If the original tank threads are damaged (e.g., from rust or improper handling), the new cap may not seal perfectly, leading to leaks. In such cases, the tank itself may need servicing.

5. **Limited Customization** Unlike some aftermarket caps, this is a standard replacement with no additional features (e.g., pressure relief adjustments or decorative options).

6. **Possible Overkill for Minor Issues** If the original cap failed due to a loose screw or minor wear, a full replacement might be unnecessary. Inspecting the existing cap first could save money.

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### **Conclusion**

The Gates SX-9630 fuel tank cap is a **reliable, high-quality replacement** for the specified GMC C2500 models, offering superior sealing and durability compared to generic alternatives. Its compatibility, ease of installation, and brand reputation make it a strong choice for owners looking to maintain or restore their vehicle s fuel system integrity. However, buyers should weigh the cost against potential counterfeit risks and ensure the tank threads are in good condition to avoid future leaks.

### **Recommendation**

- You prioritize quality and long-term reliability.

- Your original cap failed due to wear or damage.

- You want a direct OEM replacement with minimal risk of leaks.

- You re comfortable paying a slightly higher price for a trusted brand.

- You re on a tight budget and can find a similarly rated generic cap (e.g., from ACDelco or Bosch) with good reviews.

- The original cap only had a loose screw or minor damage repairing it may suffice.

- You re purchasing from an unverified seller and want to avoid counterfeit products (stick to reputable retailers).

For most GMC C2500 owners, the Gates cap is the **best balance of performance and peace of mind**, especially for vehicles with higher mileage or those used in demanding conditions. Always inspect the fuel tank threads and surrounding area before installation to ensure a proper seal.

Details:

part #: sx9630 prices

• $23.21-$35.31

specifications fueltanksysteme:

• for models: C2500
• for makes: Gmc
• for years: 1979-2000
• brand: Gates
• mpn: Sx-9630
• type: Fuel Tank Cap
• placement on vehicle: Air Fuel Delivery Hardware Fasteners Fittings
• item width: 3.630
• item height: 3.000
• manufacturer warranty: Recommended Service Interval
• ipn: C441 65-23
• compatible year: 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988
• core charge: Free No Core Charge
• fitment type: Direct Replacement
• bundle description: 1 Pc Genuine Gates Fuel Tank Cap

seller fueltanksysteme:

• # reviews: 643033
• city: Indianapolis, Indiana
• rating: 99.6%

shipping fueltanksysteme:

• service: Standard, Expedited
• transit: 2-5 Days
• class: Standard, Expedited
• type: Fixed
• cost: $0.00

payments fueltanksysteme:

• other
• credit card: Diners-club
• wallet: Apple-pay

returns fueltanksysteme:

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

general fueltanksysteme:

• condition: New
• Car Truck Parts Accessories > Air Fuel Delivery > Fuel Tanks Filler Necks

offer fueltanksysteme:

• sold: 0
• started: April 9, 2026
• options: Ship-to-home
• availability: In Stock
• quantity: 10

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