{"product_id":"wmparts-aluminum-fuel-filter-housing-cap-for-6-6l-duramax-l5p-2017-2026-with-high-temp-aem-o-ring","title":"WMPARTS Aluminium Fuel Filter Housing Cap for 6.6L Duramax L5P (2017–2026) with High‑Temp AEM O‑Ring","description":"\u003cp\u003e\u003cstrong\u003eWMPARTS' aluminum fuel filter housing cap replaces GM part 134001 for 2017–2026 6.6L Duramax L5P diesel trucks, providing a durable, OEM-fit metal cap plus a high-temperature AEM O-ring.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eOwners of Chevrolet Silverado 2500HD\/3500HD and GMC Sierra 2500HD\/3500HD with the 6.6L Duramax L5P often face fuel seep issues from the stock plastic housing cap. This WMPARTS replacement uses precision in-house tooling and an aluminum construction to resist heat and fuel exposure, while the supplied AEM acrylic-rubber O-ring is rated to 302°F (150°C) for improved sealing in diesel environments. The cap is designed for straightforward installation, matches OEM alignment, and is sold with the cap and O-ring only — the filter element is not included.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this aluminum cap reduce fuel seeps compared with the original plastic cap?\u003c\/h3\u003e\n\u003cp\u003eAluminum is far less susceptible to the cracking and deformation that can occur in plastic under repeated thermal cycles and diesel contact. By replacing the original plastic cap with a metal version, the sealing surface stays stable and the AEM O-ring keeps consistent compression to prevent leaks.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAluminum body resists heat and fuel-related degradation.\u003c\/li\u003e\n  \u003cli\u003eAEM acrylic-rubber O-ring rated to 302°F \/ 150°C for petroleum resistance.\u003c\/li\u003e\n  \u003cli\u003ePrecision tooling ensures consistent sealing faces and alignment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this cap fit my truck and how easy is installation?\u003c\/h3\u003e\n\u003cp\u003eThis cap is engineered specifically for 6.6L Duramax L5P diesel engines in 2017–2026 Silverado and Sierra 2500HD\/3500HD models. It installs using common hand tools and is intended to be a quick swap with no permanent modifications.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible only with 6.6L Duramax L5P diesel (2017–2026) vehicles.\u003c\/li\u003e\n  \u003cli\u003eNot compatible with 3.0L LM2, LZ0, or gasoline engines.\u003c\/li\u003e\n  \u003cli\u003eDesigned for a 30-minute installation using basic hand tools.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat exactly comes in the box and what else will I need?\u003c\/h3\u003e\n\u003cp\u003eThe package contains the precision-machined aluminum housing cap and the AEM acrylic-rubber O-ring. The fuel filter element itself is not included, and the cap accepts the OEM-spec TP1015 filter element if you need to replace the filter.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIncluded: aluminum housing cap and AEM-rated O-ring.\u003c\/li\u003e\n  \u003cli\u003eNot included: fuel filter element (TP1015 compatible).\u003c\/li\u003e\n  \u003cli\u003eNo special adapters or permanent modifications required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat warranty and support does WMPARTS provide?\u003c\/h3\u003e\n\u003cp\u003eWMPARTS tests every product before shipment and backs this cap with a one-year quality assurance warranty. Their support team is available to answer fitment and installation questions, typically responding within 24 hours.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e1-year quality assurance warranty included.\u003c\/li\u003e\n  \u003cli\u003ePre-shipment testing to ensure fit and finish.\u003c\/li\u003e\n  \u003cli\u003eCustomer support with a usual 24-hour response window.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this product is for: This aluminum fuel filter housing cap is suited to Duramax L5P diesel truck owners and technicians who want a longer-lasting, fuel-resistant replacement for the OEM plastic cap. Choose it if you own a 2017–2026 Chevrolet Silverado 2500HD\/3500HD or GMC Sierra 2500HD\/3500HD with the 6.6L Duramax L5P and you want a direct-fit, durable cap and high-temperature O-ring for improved sealing without modifying the fuel system.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this cap fit my 2019 Silverado 2500HD with a Duramax?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—this WMPARTS cap fits 2017–2026 Chevrolet Silverado 2500HD\/3500HD with the 6.6L Duramax L5P diesel only.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is the fuel filter included with the cap?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No—the package includes the aluminum cap and AEM O-ring only; the TP1015-style fuel filter element is sold separately.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"WMPARTS","offers":[{"title":"Default Title","offer_id":55168526418263,"sku":"B0GS994CLK","price":51.83,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/wmparts-aluminum-cap-front-view.jpg?v=1790406800","url":"https:\/\/britishgarage.co.uk\/products\/wmparts-aluminum-fuel-filter-housing-cap-for-6-6l-duramax-l5p-2017-2026-with-high-temp-aem-o-ring","provider":"British Garage","version":"1.0","type":"link"}