LowPricedAutoParts Premium 2-Piece Silicone Rear Main Crankshaft Seal - Fits Chevrolet C50 C60 Bel Air Impala 6.0L 6.5L 6.6L 7.4L Big Block 1965-1990 & More

Revive leak-free performance in your classic GM big-block vehicle with this premium 2-piece silicone rear main crankshaft seal from LowPricedAutoParts – the trusted retailer of automotive parts and accessories dedicated to outstanding customer service. This high-quality offset double lip seal (shaft diameter 2.631", seal OD 3.474", width 0.400") is engineered for GM big-block V8 engines, covering 6.0L (366 CID) in medium/heavy-duty trucks, 6.5L (396/402/427 CID), 6.6L (402 CID) and 7.4L (454 CID) applications from 1965–1990, including Chevrolet C50, C60, Bel Air, Impala, Caprice, Chevelle, El Camino, Camaro, Corvette, C10/C20/C30 Pickups & Suburbans, Blazer, Monte Carlo, Nova; GMC B60, C70, equivalents and heavy-duty series. These iconic GM big-blocks deliver legendary torque and power – favorites for muscle cars, full-size classics, pickups, Suburbans and medium/heavy-duty trucks used in restorations, towing, hauling or daily work. Over decades, the original rear main seal can harden or wear, leading to oil seepage at the crankshaft, low pressure issues or bellhousing contamination. This premium silicone 2-piece replacement effectively resolves those problems, restoring secure sealing and confidence for continued performance. Silicone construction offers superior heat resistance, conformability to minor imperfections and strong double lip protection against oil loss and contaminants. The offset design ensures proper fitment in these demanding applications. Whether you're performing a clutch replacement, transmission swap, oil pan service or full engine refresh, this seal helps maintain engine cleanliness and reliability in your classic big-block GM vehicle. Installation is straightforward for experienced mechanics: Thoroughly clean sealing surfaces and crankshaft flange, inspect for damage (consider polishing or sleeve repair if grooved), apply appropriate assembly lube or sealant per GM guidelines, align the two-piece seal halves carefully with correct offset without distortion, reassemble the rear cover with even torque sequencing, and monitor for leaks during initial startup and break-in. Professional assistance is advised for precise measurements or alignment concerns. At LowPricedAutoParts, customer service is our top priority. Message us your VIN, engine code, year, model or any fitment questions – our knowledgeable team is ready to confirm compatibility quickly and provide the personalized support you deserve. Shop with confidence knowing you're getting a premium rear main crankshaft seal backed by exceptional service. We're here to help get your Chevrolet Bel Air, Impala, C10 Pickup, C60 Kodiak, or similar big-block GM classic sealed tight, running clean and ready for the road or job – contact us today!

• Premium 2-piece silicone offset double lip rear main crankshaft seal (shaft diameter 2.631", seal OD 3.474", width 0.400") for GM big-block V8 engines including 6.0L (366 CID), 6.5L (396/402/427 CID), 6.6L (402 CID) & 7.4L (454 CID) – fits 1965–1990 Chevrolet C50, C60, Bel Air, Impala, Caprice, Chevelle, El Camino, Camaro, Corvette, C10/C20/C30 Pickups & Suburbans, Blazer, Monte Carlo, Nova; GMC equivalents & medium/heavy-duty trucks like B60, C70; always verify your VIN, year & engine code for exact match on these classic GM big-block applications
• Silicone material with offset double lip design provides excellent heat resistance, flexibility & superior oil retention – prevents rear main leaks that can contaminate clutches/transmissions or cause low pressure in high-torque big-block engines powering muscle cars, trucks & heavy-duty work vehicles
• Precision-engineered direct replacement restores reliable crankshaft sealing – essential during clutch jobs, transmission service, oil pan removal or engine rebuilds to eliminate drips, maintain cleanliness & protect drivetrain in these legendary GM V8s
• High-quality silicone construction resists compression set & wear for long-term durability under daily driving, towing, hauling or restoration use – supports the massive torque & longevity these big-block engines are renowned for across classic Chevrolet & GMC models
• Professional installation recommended: Clean crankshaft flange & housing thoroughly, inspect for scoring/grooves (polish/sleeve if needed), apply light assembly lube or approved sealant, position seal halves with correct offset alignment (no twisting), torque rear cover bolts evenly in sequence to GM specs & check for leaks after proper break-in
• LowPricedAutoParts delivers fast, expert customer support – send your VIN, year, model, engine details or photos for quick fit verification; our team is committed to exceptional service & helping you get the right premium rear main seal with complete confidence