{"product_id":"mavnai-transmission-oil-pan-gasket-for-gm-4l60e-700r4-3-16-thick-steel-shim-70a-vulcanized-rubber","title":"Mavnai Transmission Oil Pan Gasket for GM 4L60E \u0026 700R4 — 3\/16\" Thick, Steel Shim, 70A Vulcanized Rubber","description":"\u003cstrong\u003eMavnai's transmission oil pan gasket is a reinforced, 3\/16\" thick replacement gasket for GM 4L60E and 700R4 pans, featuring an internal steel shim and 70 durometer vulcanized rubber for improved sealing and longevity.\u003c\/strong\u003e\n\n\u003cp\u003eThis gasket is engineered as an upgraded alternative to cork and conventional rubber gaskets, designed to meet or exceed OE specifications and to replace Moroso 93104. Built around a 0.8mm galvanized hardened steel core and vulcanized twice to a rigid frame, it resists warping, holds bolt threads securely during installation, and provides a longer service life compared with single-material gaskets.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the steel shim improve gasket performance?\u003c\/h3\u003e\n\u003cp\u003eThe internal steel shim stabilizes the gasket body, keeping the sealing surface flat under load and heat cycles. That metal core prevents the gasket from stretching or deforming, which reduces leaks that commonly develop in softer materials over time.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e0.8mm galvanized cold-hardened steel shim for rigidity\u003c\/li\u003e\n  \u003cli\u003ePrevents warping and uneven compression\u003c\/li\u003e\n  \u003cli\u003eMaintains bolt hole alignment during installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat makes the vulcanized rubber better than cork or standard rubber?\u003c\/h3\u003e\n\u003cp\u003eThis gasket uses industrial-grade oil-resistant rubber vulcanized to a steel frame at 70 durometer hardness, giving it a balance of resilience and firmness. The double vulcanization process bonds the rubber to the metal so the gasket resists oil soak, shrinking, and brittle failure much longer than typical cork or soft rubber parts.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e70 durometer rubber resists oil and temperature breakdown\u003c\/li\u003e\n  \u003cli\u003eDouble vulcanization ensures durable metal-to-rubber bonding\u003c\/li\u003e\n  \u003cli\u003eThicker 3\/16\" cross-section for improved sealing surface\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs installation straightforward and does it require sealant?\u003c\/h3\u003e\n\u003cp\u003eInstallation is simplified by the gasket's rigidity: bolt holes stay aligned and the part holds its shape while you work, which speeds up fitting. Because it is designed for smooth, flat mating surfaces, no sealant is required; however, you must ensure the pan and transmission flange are clean and flat to achieve a reliable seal.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNo adhesive or RTV needed on clean, flat surfaces\u003c\/li\u003e\n  \u003cli\u003eRigid frame keeps bolt holes aligned for faster installation\u003c\/li\u003e\n  \u003cli\u003eNot recommended for pans with raised ridges on mating faces\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow durable is this gasket over time and repeated service?\u003c\/h3\u003e\n\u003cp\u003eConstructed to be reusable and resistant to cracking, this gasket is less likely to fail under routine service intervals than monomaterial designs. Its thicker profile and reinforced structure give it a higher lifetime value, reducing the need for frequent replacements and lowering long-term maintenance costs.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFull 3\/16\" thickness reduces risk of cracking\u003c\/li\u003e\n  \u003cli\u003eDesigned for multiple service cycles when properly handled\u003c\/li\u003e\n  \u003cli\u003eManufactured and tested by an experienced gasket factory\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This gasket is aimed at professional mechanics, DIY enthusiasts, and restoration shops working on GM transmissions that use the 4L60E or 700R4 pattern, or anyone replacing a worn Moroso 93104-style gasket. Choose this part if you want a durable, rigid gasket that simplifies alignment during installation, improves long-term sealing performance, and offers better resistance to oil and heat than cork or soft rubber options. If your transmission pan has a raised mating ridge, verify compatibility first; otherwise, prepare flat, clean mating surfaces and install without additional sealant for best results.\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 gasket require RTV or sealant?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No; when mating surfaces are clean and flat this gasket installs without sealant.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will it fit a Moroso 93104 pan?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, it is compatible with Moroso 93104 and fits GM 4L60E and 700R4 patterns.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Mavnai","offers":[{"title":"Default Title","offer_id":48086138945694,"sku":"B0D9BJHYSK","price":46.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/mavnai-front-packaging-gasket.jpg?v=1785886310","url":"https:\/\/northtrailauto.ca\/products\/mavnai-transmission-oil-pan-gasket-for-gm-4l60e-700r4-3-16-thick-steel-shim-70a-vulcanized-rubber","provider":"North Trail Auto","version":"1.0","type":"link"}