fits model: Mark. make: Jaguar. year: 1957–1958.

( Brand: Motorad ), ( Manufacturer Part Number: SX-D5QE ), ( 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: C261 47-26 ), ( Compatible Model: Mark Viii ), ( Compatible Year: 1958 1957 ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement ), ( Bundle Description: 1 Pc Genuine Motorad Fuel Tank Cap )
The **Motorad SX-D5QE Fuel Tank Cap** is a meticulously crafted, high-performance replacement part designed specifically for the iconic 1957 1958 Jaguar Mark II and Mark X models, including the rare **SJ (Super Jaguar) gas storage variants**. Engineered to perfection, this premium fuel cap is built to restore both the aesthetic elegance and functional integrity of your classic Jaguar, ensuring a seamless blend of heritage styling and modern reliability. Constructed from durable **chrome-plated brass**, the cap features a sleek, vintage-inspired design that mirrors the original factory specifications, complete with precise threading and a secure, leak-proof seal. The **D5QE** variant is particularly tailored for the **SJ models**, which often required specialized components due to their unique fuel storage configurations, making this an essential upgrade for enthusiasts seeking authenticity and performance. Beyond its visual appeal, the Motorad cap is engineered with a **reinforced rubber gasket** to prevent fuel evaporation and contamination, while its **precision-machined threads** guarantee a tight, vibration-resistant fit critical for maintaining optimal fuel system efficiency in high-performance applications. Whether restoring a showroom-worthy classic or enhancing the daily drivability of a beloved Jaguar, this fuel tank cap delivers uncompromising quality, ensuring your vehicle retains its legendary charm while benefiting from contemporary engineering. Ideal for both restoration projects and routine maintenance, the Motorad SX-D5QE is a must-have for Jaguar purists who demand nothing less than perfection in every detail.
Buying a replacement fuel tank cap for a 1957-1958 Jaguar Mark II (SJ chassis) can be a straightforward or complicated task depending on sourcing, compatibility, and long-term needs. Below is a detailed breakdown of the pros and cons, followed by a conclusion and recommendation.
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**Pros of Buying a Motorad SX-D5QE Fuel Tank Cap:**1. **Compatibility and Fit:** The Motorad SX-D5QE is specifically designed for Jaguar Mark II models, including the SJ chassis from the late 1950s. This means it should fit correctly without modifications, addressing potential issues like leaks or improper sealing that could arise from aftermarket or generic parts.
2. **Quality Materials:** Motorad parts are generally manufactured with durable materials, including stainless steel or high-grade plastics, which can resist corrosion, cracking, or warping over time. This is particularly important for vintage vehicles exposed to the elements.
3. **Functionality:** The cap is likely to include modern features like a secure locking mechanism, a proper gasket for a tight seal, and potentially a fuel filler neck that matches the original design. This ensures the fuel system operates efficiently and without spills.
4. **Aesthetic Accuracy:** Motorad parts are often designed to replicate original components closely, preserving the vehicle s vintage appearance. This can be important for enthusiasts who prioritize authenticity in their restorations.
5. **Warranty and Support:** Reputable suppliers like Motorad may offer warranties or customer support, providing peace of mind in case of defects or installation issues. This is less common with generic or eBay parts.
6. **Ease of Installation:** Since the part is designed for your specific model, it should require minimal or no adjustments during installation, saving time and potential frustration.
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**Cons of Buying a Motorad SX-D5QE Fuel Tank Cap:**1. **Cost:** Specialty parts like this can be more expensive than generic or aftermarket alternatives. For a vintage Jaguar, the price may be justified, but it could still be a significant investment if you re on a tight budget.
2. **Availability and Lead Times:** High-quality, reproduction parts may not always be in stock, leading to longer wait times for delivery. This could delay your restoration or repair project.
3. **Overkill for Minor Issues:** If the original cap is only slightly damaged or worn, a full replacement might be unnecessary. In such cases, a simpler fix (e.g., replacing just the gasket or filler neck) could suffice, saving money and resources.
4. **Potential for Counterfeit or Low-Quality Parts:** While Motorad is a reputable brand, there is a risk of purchasing counterfeit or knockoff parts, especially if buying from untrusted sellers. Always verify the seller s authenticity and product origins.
5. **Compatibility with Aftermarket Mods:** If you ve made modifications to your fuel system (e.g., larger tanks, custom filler necks), the SX-D5QE might not be fully compatible. Double-checking dimensions and specifications is essential to avoid mismatches.
6. **Environmental and Ethical Concerns:** Some vintage car parts, even reproduction ones, may raise questions about sustainability or ethical sourcing. If this is a concern for you, research the manufacturer s practices or consider alternatives like recycled or salvaged parts.
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**Conclusion:**The Motorad SX-D5QE fuel tank cap is a strong choice for owners of a 1957-1958 Jaguar Mark II (SJ chassis) seeking a reliable, high-quality, and authentic replacement. The pros such as precise fit, durability, and attention to detail outweigh the cons for most enthusiasts, especially those prioritizing long-term reliability and preservation of their vehicle s original character. However, the cost and potential lead times may be drawbacks if you re working within a tight budget or timeline.
If your primary goal is functionality and you re willing to invest in a part that will last, the Motorad cap is highly recommended. For those on a budget or dealing with minor issues, exploring other options (e.g., eBay listings, salvage yards, or simpler repairs) could be worth considering.
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**Final Recommendation:** Purchase the Motorad SX-D5QE fuel tank cap if:- You value authenticity and long-term durability.
- You ve confirmed it fits your specific model (SJ chassis, 1957-1958).
- You re comfortable paying a premium for a high-quality, reproduction part.
- You ve verified the seller s legitimacy to avoid counterfeit products.
Avoid it if:- The original cap is only slightly damaged and a cheaper fix (e.g., gasket replacement) would suffice.
- You re working with a limited budget and can find a suitable alternative elsewhere.
- You ve made significant aftermarket modifications that could conflict with the part s design.
For most Jaguar enthusiasts, the Motorad part is the best balance of quality and compatibility, making it the recommended choice. Always pair the purchase with thorough research and, if possible, consultation with a Jaguar specialist to ensure the best outcome.
MotoRad Fuel Tank Cap for 1957-1958 Jaguar Mark VIII Gas Delivery storage sj: Status: In Stock.