1978 GMC Jimmy Differentials
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Richmond®Excel™ Ring and Pinion Gear SetGMC Jimmy 1978, Excel™ Ring and Pinion Gear Set by Richmond®. Designed utilizing the latest technology, this product by Richmond features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle,...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$7.75 - $275.99 - Motive Gear®Ring and Pinion Gear SetGMC Jimmy 1978, Ring and Pinion Gear Set by Motive Gear®. Motive Gear stock performance ring and pinions are excellent replacements for OE. Experienced installers prefer ring and pinions for easy setup, superior strength, quality, and...Quiet operationComputer controlled heat treatment$350.18 - $497.99
- Powertrax®Lock Right LockerGMC Jimmy with 30 Spline, Open Differential 1978, Lock Right Locker by Powertrax®. With Couplers. Designed utilizing the latest technology, this product features premium quality and will perform better than advertised. Perfect for your...Brute force devices for rugged applicationsReplacement of differential case not required$296.98 - $369.25
- ARB®Air Locker™ DifferentialGMC Jimmy Base / High Sierra / Sierra Classic / Sierra Grande 4.1L / 5.0L / 5.7L with 30 Shaft Spline, Dana 44 Series Axle 1978, Air Locker™ Differential by ARB®. Created to provide 100% traction on demand, without sacrificing any of...Differential CaseFlange Cap Assembly$1,091.00
- Auburn Gear®Grip-N-Loc™ DifferentialGMC Jimmy 1978, Grip-N-Loc™ Differential by Auburn Gear®. Auburn Gear’s most advanced limited slip differential, the Grip-N-Loc™, builds upon exclusive technologies found in the previous limited slip line, but is reengineered to...Upgrades vehicles for safe transfer of increased power/torque across the axleCase material is up to 50% stronger than OE cases$608.80 - $655.37
- Dorman®OE Solutions™ Differential Ring and PinionGMC Jimmy 1978, OE Solutions™ Differential Ring and Pinion by Dorman®. The gears of Dorman’s Differential Ring and Pinion are engineered to effectively transfer torque from the driveshaft to the axles. It's robust steel construction...Replacement eliminates driveline grinding and whining soundsDirect replacement for a proper fit$210.05 - $779.52
- Yukon Gear & Axle®High Performance Ring and Pinion Gear SetGMC Jimmy 1978, High Performance Ring and Pinion Gear Set by Yukon Gear & Axle®. Yukon Ring and Pinion sets give you the confidence of knowing you’re running gears designed for the harshest of conditions. Whether it’s on the street,...Smooth finishEasy Set-Up$426.89 - $461.89
- Richmond®Mini SpoolGMC Jimmy 1978, Mini Spool by Richmond®. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and performance with this premium differential component that delivers the ultimate in...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$88.94 - $126.37
- Richmond®Rear Street Gear Ring and Pinion Gear SetGMC Jimmy with 12 Bolt, GM 8.875" Series Axle 1978, Rear Street Gear Ring and Pinion Gear Set by Richmond®. Richmond Gear ring and pinions are perfect for any vehicle where performance and durability matters. Made from first-run steel,...Outstanding design and state of the art manufacturing techniquesExtensive testing ensures uncompromising reliability$314.99 - $414.99
- AllStar Performance®Mini SpoolGMC Jimmy with GM 7.5" Series Axle 1978, Mini Spool by AllStar Performance®. Drive with confidence and have the edge with AllStar Performance. With such a ground-breaking design and elaborate development, you’ll never run into a...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$93.99
- AllStar Performance®Ring and Pinion Gear SetGMC Jimmy with 10 Bolt, GM 8.5" Series Axle 1978, Ring and Pinion Gear Set by AllStar Performance®. Drive with confidence and have the edge with AllStar Performance. With such a ground-breaking design and elaborate development, you’ll...Precise manufacturing and high-grade materialsExceptional performance at a competitive price$169.99
- Eaton®Detroit Locker™ Front DifferentialGMC Jimmy with 3.73 and Down Gear Ratio, Disconnect Axle, 1.31" Axle Shaft Diameter, Dana 44 Series Axle 1978, Detroit Locker™ Front Differential by Eaton®. The Detroit Locker is a 100%-automatic locking differential that provides...100% automatic locking - no driver action neededProvides maximum amount of traction to both wheel ends$840.99
- Eaton®Detroit Truetrac™ DifferentialGMC Jimmy 1978, Detroit Truetrac™ Differential by Eaton®. The Detroit Truetrac is a helical-gear style performance differential that maximizes wheel traction and enhances driving and handling characteristics. Operation of the Truetrac...Helical-style pinion gearsLimited-slip operation$630.99 - $696.99
- Eaton®Posi™ Rear DifferentialGMC Jimmy with 3.73 and Up Gear Ratio, 12 Bolt, 1.30" Axle Shaft Diameter, GM 8.875" Series Axle 1978, Posi™ Rear Differential by Eaton®. The Eaton Posi limited-slip differential prevents wheel slip before it can get started. To do...Superior rebuildable designRace-bred carbon friction discs$716.99
- Motive Gear®Rear Mini SpoolGMC Jimmy with 30 Spline, Open Differential, 12 Bolt, GM 8.875" Series Axle 1978, Rear Mini Spool by Motive Gear®. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and performance...Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best$90.07
- Motive Gear®SpoolGMC Jimmy 1978, Spool by Motive Gear®. All Motive Gear products are engineered for their specific application and manufactured in state of the art facilities. All of company products undergo rigid quality control processes to insure...Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best$182.36 - $259.35
- National®Outer Differential Pinion SealGMC Jimmy 1978, Outer Differential Pinion Seal by National®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind, this product by National...Designed to increase wheel-end reliability by effectively excluding dirt, moisture, and other contaminantsA patent-pending National Dynamic Edge technology allows for maximum protection$7.21 - $28.70
- Timken®Differential Bearing and Seal KitGMC Jimmy 1978, Differential Bearing and Seal Kit by Timken®. Get optimum vehicle performance with Timken bearings. Timken manufactures ball bearings, cylindrical roller bearings, and tapered roller bearings, and all feature premium...Designed to effectively reduce frictionUltimate load handling capability$75.33 - $135.14
- Timken®Differential RaceGMC Jimmy 1978, Differential Race by Timken®. Precision manufactured using premium materials and made by the company that is trusted by many carmakers, the Timken race is the right choice if you opt for a highly durable part that...OE quality fit, performance, and reliabilityCost-effective friction management solution$6.82 - $12.35
- SKF®Front Differential Pinion SealGMC Jimmy with Dana 44 Series Axle 1978, Front Differential Pinion Seal by SKF®. Designed utilizing the latest technology, this product by SKF features premium quality and will perform better than advertised. Perfect for your vehicle...Superior protection against dirt and waterManufactured with high-quality tested design and materials for correct fit$14.22
- Richmond®Excel™ Differential Carrier Gear KitGMC Jimmy with 30 Spline 1978, Excel™ Differential Carrier Gear Kit by Richmond®. Designed utilizing the latest technology, this product by Richmond features premium quality and will perform better than advertised. Perfect for your...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$135.03 - $154.28
- Timken®Differential BearingGMC Jimmy 1978, Differential Bearing by Timken®. Get optimum vehicle performance with Timken bearings. Timken manufactures ball bearings, cylindrical roller bearings, and tapered roller bearings, and all feature premium design, enhanced...Designed to effectively reduce frictionUltimate load handling capability$12.53 - $19.64
- Timken®Differential Pinion SealGMC Jimmy 1978, Differential Pinion Seal by Timken®. Timken offers the right seal to keep your vehicle running optimally. Timken seals provide ultimate protection from contaminants and help retain lubricants and liquids, ensuring...Machined rubber sealing edge provides greater accuracy and consistency and a better sealing surfaceAn extra dust lip helps keep harmful contaminants out and protects against rust and corrosion$8.50 - $19.09
- SKF®Differential Rebuild KitGMC Jimmy 1978, Differential Rebuild Kit by SKF®. Designed utilizing the latest technology, this product by SKF features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured...Excellent replacement for your worn out or faulty partDesigned to restore original performance and reliability$138.82 - $207.15
- Dorman®OE Solutions™ Ring and Pinion Bearing Installation KitGMC Jimmy 1978, OE Solutions™ Ring and Pinion Bearing Installation Kit by Dorman®. Dorman’s Differential Bearing Kit allows you to keep all the necessary components for installation of the Differential Ring and Pinion readily on hand.Replacement eliminates driveline grinding and whining soundsRobust steel construction ensures durability for years of service$168.23 - $193.18
- Timken®Differential Pinion BearingGMC Jimmy 1978, Differential Pinion Bearing by Timken®. Get optimum vehicle performance with Timken bearings. Timken manufactures ball bearings, cylindrical roller bearings, and tapered roller bearings, and all feature premium design,...Designed to effectively reduce frictionUltimate load handling capability$19.19 - $26.89
- Timken®Differential Pinion RaceGMC Jimmy 1978, Differential Pinion Race by Timken®. Precision manufactured using premium materials and made by the company that is trusted by many carmakers, the Timken race is the right choice if you opt for a highly durable part that...OE quality fit, performance, and reliabilityCost-effective friction management solution$9.35 - $19.24
- National®Differential BearingGMC Jimmy with GMC Series Axle 1978, Differential Bearing by National®. This bearing is manufactured from high quality steel and constructed utilizing state-of-the-art computer controlled heat treatment technology to ensure ultimate...Premium bearing design matches OEM specificationsPrecision manufactured using premium-grade steel for outstanding durability and performance$12.45 - $18.40
- National®Differential Carrier RaceGMC Jimmy with 8.5" Ring Gear 1978, Differential Carrier Race by National®. This part is manufactured by one of the most trusted names in the automotive industry to keep your vehicle perform optimally. It is built to the original...Premium bearing design matches OEM specificationsPrecision manufactured using premium-grade steel for outstanding durability and performance$6.78 - $12.07
- National®Differential Pinion BearingGMC Jimmy 1978, Differential Pinion Bearing by National®. This bearing is manufactured from high quality steel and constructed utilizing state-of-the-art computer controlled heat treatment technology to ensure ultimate performance and...Premium bearing design matches OEM specificationsPrecision manufactured using premium-grade steel for outstanding durability and performance$17.47 - $25.34
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