fits model: C25, C2500. make: Gmc. year: 1967–1972.

( Brand: Gates ), ( Manufacturer Part Number: SX-9516 ), ( 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: C404 49-43 ), ( Compatible Model: C25/c2500 Pickup ), ( Compatible Year: 1972 1971 1970 1969 1968 1967 ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement ), ( Bundle Description: 1 Pc Genuine Gates Fuel Tank Cap )
The **Gates SX-9516 Fuel Tank Cap** is a meticulously engineered, high-performance replacement part designed specifically for the classic 1967 through 1972 GMC C25 and C2500 models equipped with the iconic **4.1L, 4.6L, 4.8L, or 5.0L inline-six engines** (including the legendary **Chevy "Big Block" V8** in the CE trim). Crafted from premium materials and built to exacting standards, this fuel cap is more than just a functional component it s a precision-fitted upgrade that ensures a secure, leak-proof seal while maintaining the authentic look and feel of your vintage truck.
Engineered with **Gates signature durability**, the SX-9516 features a **high-quality rubber gasket** that resists degradation from fuel vapors, UV exposure, and temperature fluctuations, ensuring a tight seal that prevents fumes from escaping and contaminants from entering the tank. The cap s **metal body** is precision-machined to match the original GMC design, complete with the iconic **stamped "GMC" branding** and the distinctive **fuel gauge venting system**, preserving the classic aesthetic while delivering modern reliability. The **threaded base** is designed for a snug, vibration-resistant fit, eliminating the risk of loosening over time a common issue with aftermarket knockoffs.
Beyond its functional excellence, the Gates SX-9516 is a **restoration-grade part**, ideal for both show trucks and daily drivers. Its **OEM-compatible dimensions** ensure a perfect fit on the original fuel tank, whether your GMC is a **workhorse C2500** or a **rare CE model** with its powerful V8. The cap s **smooth-operating mechanism** allows for easy opening and closing, even after years of use, while the **reinforced lid** prevents accidental damage from drops or impacts. Whether you re maintaining a **showroom-worthy classic** or simply ensuring your daily driver runs smoothly, this Gates fuel cap delivers the **performance, reliability, and authenticity** your GMC deserves.
For enthusiasts who demand nothing less than perfection, the Gates SX-9516 is the **ultimate choice** a blend of **heritage engineering and modern craftsmanship** that keeps your fuel system sealed tight, your truck running strong, and your classic GMC looking and performing like it rolled off the assembly line.
### Pros and Cons of buying a Gates SX-9516 Fuel Tank Cap for a 1967-1972 GMC C25/C2500 (4.1L 5.0L V8)
#### **Pros:**1. **Direct Fitment** The Gates SX-9516 is specifically designed for 1967 1972 GMC C25/C2500 models with 4.1L 5.0L V8 engines, ensuring compatibility without modifications.
2. **High-Quality Material** Made from durable, corrosion-resistant materials, including a sturdy metal base and a secure locking mechanism, which helps prevent fuel leaks and tampering.
3. **Sealed Design** Features a reliable gasket and sealing system to maintain fuel integrity, reducing the risk of vapor loss and contamination.
4. **Easy Installation** Designed for straightforward replacement, requiring minimal tools and effort, even for those with basic mechanical skills.
5. **Compatibility with Aftermarket Upgrades** Works well with fuel system modifications, such as performance fuel pumps or upgraded fuel lines, without interfering with other components.
6. **Brand Reputation** Gates is a trusted manufacturer in the automotive aftermarket, known for producing reliable and long-lasting parts.
7. **Prevents Theft** The locking mechanism helps deter fuel theft, which is a common issue with older vehicles.
#### **Cons:**1. **Potential Overkill for Basic Use** If your vehicle is rarely driven or stored in a secure location, a locking cap may feel unnecessary, adding an extra step during refueling.
2. **Cost Compared to OEM** While not excessively expensive, it may be slightly more than a generic aftermarket or OEM replacement cap, depending on availability.
3. **Limited Availability in Some Regions** Depending on where you purchase, this part may not be as widely stocked as universal fuel caps, requiring online ordering or specialty auto parts stores.
4. **Possible Misalignment Issues** If not installed correctly, the cap could be difficult to remove or may not seal properly, leading to fuel odor or minor leaks.
5. **Not Universal** Unlike some aftermarket caps, this is a direct-fit part, so it won t work on non-GMC vehicles or slightly modified fuel tanks.
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### **Conclusion**
The Gates SX-9516 fuel tank cap is a well-engineered, reliable choice for 1967 1972 GMC C25/C2500 owners, particularly those who prioritize security, durability, and a direct fit. While it may not be the absolute cheapest option, its quality and compatibility make it a strong investment for preventing leaks, theft, and long-term fuel system issues. For most users, the benefits outweigh the minor drawbacks, especially if fuel security and a tight seal are concerns.
### **Recommendation**
If you need a replacement or upgrade for your GMC s fuel tank cap, the **Gates SX-9516 is highly recommended**. It is the best balance of fit, function, and reliability for your vehicle s specifications. Ensure you purchase from a reputable seller (such as RockAuto, Summit Racing, or a trusted local auto parts store) to avoid counterfeit or damaged units. If budget is a concern, compare it with OEM or other brand-specific alternatives, but be cautious of lower-quality knockoffs that may fail prematurely. For most owners, the Gates cap will provide years of trouble-free service.
Gates Fuel Tank Cap for 1967-1972 GMC C25 C2500 Pickup 4.1L 4.6L 4.8L 5.0L ce: Status: In Stock.