Differential Cover For GM 10.5″ 14 Bolts Rear Axle SPELAB ---tab Fitment--- Vehicle Compatibility (GM with 10.5″ 14-Bolt Rear Axle) GM also produced 9.5″ and 11.5/11.8″ 14-bolt axles — different size housings and covers, so this cover will not fit those. Always confirm your rear axle size by measuring the ring gear diameter or checking build sheets before ordering. 2002-2006 Chevrolet Avalanche 25001989-1998 Chevrolet C25001989-1998 Chevrolet C35001973-1988 Chevrolet C201973-1988 Chevrolet C301996-1998 Chevrolet Express Van 25001996-2015 Chevrolet Express Van 35002009-2015 Chevrolet Express Van 45001975-1995 Chevrolet G201979-1996 Chevrolet G301973-1998 Chevrolet K20/K25001972-1998 Chevrolet K30/ K35001997-2005 Chevrolet P301997-1999 Chevrolet P35001999-2015 Chevrolet Silverado 25001999-2015 Chevrolet Silverado HD 25002001-2013 Chevrolet Silverado HD 35001973-2015 Chevrolet Suburban 3/4 Ton 1973-1998 GMC C25/ C25001973-1998 GMC C35/ C35001981-1987 GMC G15/ G15001993-1996 GMC G35/ G35001966-1998 GMC K25/ K25001977-1998 GMC K35/K35001996-1998 GMC Savana 25001996-2015 GMC Savana 35002009-2015 GMC Savana 45001999-2015 GMC Sierra 25001999-2015 GMC Sierra 25001973-2000 GMC Suburban 3/4 Ton1992-2015 GMC Yukon 25002006-2015 GMC Yukon XL 2500 Note: The year and model may not guarantee compatibility. Please confirm whether the axle is GM 10.5″ 14 Bolts. EXPLODED VIEW ---tab Description--- Innovative points: 1. The external heat sink design increases the contact area between the differential cover and the surrounding air, enhancing heat dissipation performance.2. The internal diversion groove design aligns with the direction of liquid flow in the differential gear's rotation, ensuring maximum flow rate for better lubrication.3. The use of aluminum alloy material significantly improves cooling performance compared to the commonly used iron material. When comparing billet to cast products, billet items are often considered more durable and built for long-lasting performance.4. An external observation mirror with a floating ball is used to monitor the oil level. Traditional observation mirrors in the market may darken over time, reducing visibility. Therefore, the floating ball allows us to monitor the oil level even if the mirror darkens. 5. The outside with black wrinkle paint providing rust resistance. Specifications： ---tab FAQs--- Q1: What materials is the SPELAB gm 14 bolt differential cover made of?A1: The SPELAB differential cover is made from A380 aluminum, offering superior strength and cooling performance. Q2: How does the SPELAB gm 10.5 14 bolt differential cover improve cooling?A2: The cover features external cooling fins (534 sq. inches) and internal heat fins (120 sq. inches), ensuring optimal heat dissipation and enhanced cooling. Q3: Does the diff cover come with installation hardware?A3: Yes, the SPELAB differential cover comes with 304 stainless steel hex flange mounting bolts...