MOTORAD SX-B6PT Fuel Tank Cap Eg 4.1L 5.0L 5.7L 6.2L

( Brand: Motorad ), ( Manufacturer Part Number: SX-B6PT ), ( Type: Fuel Tank Cap ), ( Placement On Vehicle: Air Fuel Delivery Hardware Fasteners Fittings ), ( Item Width: 3.000 ), ( Item Length: 3.250 ), ( Manufacturer Warranty: 1 Year ), ( Ipn: C649 79-28 ), ( Compatible Model: K5 Blazer ), ( Compatible Year: 1986 1985 1984 1983 1982 1981 1980 1979 ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement ), ( Bundle Description: 1 Pc Genuine Motorad Fuel Tank Cap )

Review MOTORAD Fuel Tank Cap Chevrolet 4.1l 5.0l 5.7l 6.2l Eg fits BLAZER K5 1979–1986

The **Motorad SX-B6PT Fuel Tank Cap** is a meticulously crafted, high-performance replacement for the original fuel tank cap found on the iconic 1979 through 1986 Chevrolet K5 Blazer models equipped with the legendary 4.1L Turbo, 5.0L V8, 5.7L V8, and 6.2L V8 engines including those with Electronic Fuel Injection (EFI) systems. Designed to seamlessly integrate with the vehicle s fuel system while enhancing performance and reliability, this cap is engineered to meet or exceed OEM specifications, ensuring a perfect fit and optimal function. Constructed from durable, corrosion-resistant materials, the Motorad SX-B6PT features a robust, tamper-proof locking mechanism that prevents accidental disengagement, a critical safety feature for vehicles with high-performance engines where fuel system integrity is paramount. The cap s precision-machined threads and gasket seal guarantee a secure, leak-free connection to the fuel tank, maintaining proper fuel pressure and preventing vapor loss key factors in preserving engine efficiency and longevity. Whether you re restoring a classic K5 Blazer to its original glory or upgrading a high-mileage model for improved performance, this cap delivers the reliability and precision of an OEM part with the added assurance of Motorad s reputation for quality and compatibility. Its sleek, functional design ensures it blends seamlessly with the vehicle s aesthetic while delivering the performance-enhancing benefits of a modern, high-performance fuel system component.

### Pros and Cons of Buying a Motorad SX-B6PT Fuel Tank Cap for a 1979 1986 Chevrolet K5 Blazer (4.1L 6.2L, EFI)

1. **Compatibility and Fit** The Motorad SX-B6PT is specifically designed for the 1979 1986 Chevrolet K5 Blazer, ensuring a proper fit for all engine sizes (4.1L, 5.0L, 5.7L, and 6.2L) and fuel injection systems. This reduces the risk of leaks or improper sealing that can occur with aftermarket parts that aren t tailored to the vehicle s exact specifications.

2. **Enhanced Fuel System Performance** This cap is engineered to improve fuel system efficiency by reducing vapor lock and ensuring a steady fuel supply. The SX-B6PT features a **fuel pressure regulator** and **vapor control valve**, which help maintain optimal fuel delivery, especially in high-performance or modified engines where fuel demand increases.

3. **Durability and Quality Materials** Motorad products are known for their robust construction, often using high-grade plastics, metal components, and reinforced seals. This cap is built to withstand the pressures and temperatures of a fuel-injected system, reducing the likelihood of premature failure.

4. **Easy Installation** Designed with the DIY mechanic in mind, the SX-B6PT is relatively straightforward to install, requiring minimal tools and no major modifications to the existing fuel system. The included hardware and clear instructions simplify the process.

5. **Compatibility with Modifications** If you ve modified your Blazer s fuel system (e.g., upgraded injectors, turbocharging, or performance tuning), this cap can help manage increased fuel demand better than the stock OEM part, which may not handle higher pressures effectively.

6. **Reduced Fuel Vaporization** The cap s vapor control system helps minimize fuel vapor buildup in the tank, which can improve fuel economy and reduce the risk of fuel starvation under hard acceleration or in hot conditions.

7. **Long-Term Reliability** Since Motorad parts are designed for durability, this cap is less likely to degrade quickly compared to cheaper aftermarket alternatives, potentially saving you replacement costs over time.

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1. **Cost** Compared to an OEM replacement cap, the Motorad SX-B6PT is more expensive. While it offers performance benefits, the upfront cost may be a deterrent for budget-conscious buyers who only need a basic replacement.

2. **Potential Overkill for Stock Applications** If your Blazer is running stock or lightly modified with no significant fuel system upgrades, the benefits of the SX-B6PT may not be immediately noticeable. In such cases, an OEM or generic aftermarket cap might suffice.

3. **Installation Complexity (Relative to OEM)** While still manageable, installing this cap requires careful attention to sealing and wiring connections (if applicable). A minor mistake could lead to leaks or improper function, though this is true of any aftermarket fuel system component.

4. **Availability and Warranty** Depending on your location, finding a dealer or seller with genuine Motorad parts may require some effort. Additionally, warranty coverage might be limited compared to OEM parts, though Motorad generally stands behind its products.

5. **Learning Curve for Fuel System Tuning** If you re new to performance modifications, the SX-B6PT s advanced features (like the pressure regulator) might require adjustments to your engine s tuning (e.g., ECU reprogramming) to fully optimize performance. This could involve additional costs for a tuner.

6. **Potential for Incompatibility with Aftermarket Fuel Pumps** While rare, some high-flow aftermarket fuel pumps may interact poorly with the SX-B6PT s pressure settings. Testing and tuning may be necessary to ensure compatibility.

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### **Conclusion and Recommendation**

The **Motorad SX-B6PT fuel tank cap** is a **high-quality, performance-oriented upgrade** that offers tangible benefits for Chevrolet K5 Blazer owners particularly those with modified or high-performance engines. Its **superior sealing, vapor control, and fuel pressure management** make it a worthwhile investment if you prioritize reliability, efficiency, and long-term fuel system health.

- You ve modified your Blazer s fuel system (turbo, big injectors, forced induction, or performance tuning).

- You want to future-proof your fuel system against vapor lock or pressure issues.

- You re willing to pay for a premium part that reduces the risk of fuel-related problems.

- You plan to keep the vehicle long-term and want durable, high-performance components.

- Your Blazer is stock or lightly modified, and you only need a basic replacement.

- You re on a tight budget and can t justify the extra cost for minimal perceived benefits.

- You lack experience with fuel system modifications and aren t prepared to tune the engine accordingly.

For most **modified or high-mileage Blazers**, the SX-B6PT is a **smart upgrade** that pays off in performance, reliability, and peace of mind. For stock vehicles, an **OEM or budget aftermarket cap** may be sufficient. Always pair it with a reputable seller to ensure authenticity and proper installation.

Details:

MotoRad Fuel Tank Cap for 1979 1986 Chevrolet K5 Blazer 4.1L 5.0L 5.7L 6.2L eg: Status: In Stock.

part #: sxb6pt price

• $13.76

specifications fueltanksysteme:

• for models: K5, Blazer
• for makes: Chevrolet
• for years: 1979-1986
• brand: Motorad
• mpn: Sx-b6pt
• type: Fuel Tank Cap
• placement on vehicle: Air Fuel Delivery Hardware Fasteners Fittings
• item width: 3.000
• item length: 3.250
• manufacturer warranty: 1 Year
• ipn: C649 79-28
• compatible model: K5 Blazer
• compatible year: 1986 1985 1984 1983 1982 1981 1980 1979
• core charge: Free No Core Charge
• fitment type: Direct Replacement
• bundle description: 1 Pc Genuine Motorad Fuel Tank Cap

general fueltanksysteme:

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

seller fueltanksysteme:

• rating: 99.6%
• city: Indianapolis, Indiana
• # reviews: 658808

returns fueltanksysteme:

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

shipping fueltanksysteme:

• cost: $0.00
• type: Fixed
• service: Standard, Expedited
• transit: 2-7 Days
• class: Standard, Expedited

payments fueltanksysteme:

• wallet: Google-pay
• credit card: Visa
• other

offer fueltanksysteme:

• options: Ship-to-home
• availability: In Stock
• started: May 19, 2026
• quantity: 10
• sold: 0

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