{"product_id":"gear-housing-access-hole-cover-3903463-fits-cummins-4b-6b-6c-isc-series-engine","title":"Gear Housing Access Hole Cover 3903463 Fits Cummins 4B 6B 6C ISC Series Engine","description":"\u003cstrong\u003eThis Gear Housing Access Hole Cover is a high-quality aftermarket replacement part compatible with Cummins 4B 6B 6C ISC Series Engine and matches OEM Part# 3903463.\u003c\/strong\u003e\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThis heavy-duty gear housing access hole cover is designed to provide a secure and reliable seal for your engine's timing gear compartment. Engineered specifically for Cummins diesel engines, it prevents contaminants from entering the housing while maintaining internal pressure integrity. Its robust construction ensures long-term performance in high-vibration and extreme temperature environments.\u003c\/p\u003e\u003ch3\u003eKey Features \u0026amp; Performance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePrecision-molded to meet original equipment dimensions for a perfect fit.\u003c\/li\u003e\n\u003cli\u003eConstructed from high-grade materials resistant to oil, heat, and engine fluids.\u003c\/li\u003e\n\u003cli\u003eDirect replacement design simplifies maintenance and repair workflows.\u003c\/li\u003e\n\u003cli\u003eProtects critical internal gear components from dust, dirt, and debris.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCummins 4B Series Engines\u003c\/li\u003e\n\u003cli\u003eCummins 6B Series Engines\u003c\/li\u003e\n\u003cli\u003eCummins 6C Series Engines\u003c\/li\u003e\n\u003cli\u003eCummins ISC Series Engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number(s):\u003c\/strong\u003e 3903463\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComponent Type:\u003c\/strong\u003e Gear Housing Access Cover\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment Type:\u003c\/strong\u003e Direct Replacement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e High-Strength Engine-Grade Composite\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Is this part manufactured to the same dimensions as the original factory cover? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, this aftermarket component is engineered to match the precise specifications of OEM part 3903463 for seamless installation. \u003cstrong\u003eQ:\u003c\/strong\u003e Does this cover include a new seal or O-ring? \u003cstrong\u003eA:\u003c\/strong\u003e This listing is for the cover itself; it is recommended to inspect your existing seal or purchase a new gasket to ensure a leak-proof fit during installation.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eCompatibility may vary by serial number. Verify fitment before purchase.\u003c\/em\u003e\u003c\/p\u003e","brand":"Northline Parts","offers":[{"title":"Default Title","offer_id":42819713138759,"sku":"ZZ2T00129","price":22.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0681\/7123\/5399\/files\/57_387958a7-7fff-4608-9fb5-513f4d7076e8.jpg?v=1779785757","url":"https:\/\/www.northlineparts.com\/products\/gear-housing-access-hole-cover-3903463-fits-cummins-4b-6b-6c-isc-series-engine","provider":"Northline Parts","version":"1.0","type":"link"}