1978 GMC G-Series Transmission Repair & Rebuild Kits
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Sonnax®High Performance Automatic Transmission Pump BushingGMC G-Series THM350 Transmission 1978, High Performance Automatic Transmission Pump Bushing by Sonnax®. Worn babbit pump bushings in OE units allow the converter hub and inner pump gear to move off-center, causing damage to the pump...Highly wear-resistant PTFE lining for maximum durabilityTight tolerance for improved fit$17.90 - Sonnax®High Performance Extreme Duty Automatic Transmission Clutch Hub KitGMC G-Series THM400 Transmission 1978, High Performance Extreme Duty Automatic Transmission Clutch Hub Kit by Sonnax®. Forward. Includes: Bearing, Hub. Sonnax extreme duty forward clutch hub kit is manufactured from forged 4140 steel...Eliminates spline wear in extreme power and offroad applicationsSimple installation adds bearing and reduces unit endplay$142.44
- Sonnax®High Performance Heavy Duty Automatic Transmission Clutch HubGMC G-Series THM400 Transmission 1978, High Performance Heavy Duty Automatic Transmission Clutch Hub by Sonnax®. Forward. Material: 1045 Forged Steel. Sonnax heavy duty forward clutch hub is an ideal upgrade over OE hubs in...Made from forged 1045 steelThicker cross-section for increased strength$110.57
- Transtar Industries®Deluxe™ Automatic Transmission Master Rebuild KitGMC G-Series 1978, Deluxe™ Automatic Transmission Master Rebuild Kit by Transtar Industries®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high...Superior in durability and wear resistanceSuperior proprietary coating for maximum durability$122.95 - $468.23
- Transtar Industries®High Performance Automatic Transmission Rebuild KitGMC G-Series 1978, High Performance Automatic Transmission Rebuild Kit by Transtar Industries®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high...Superior in durability and wear resistanceSuperior proprietary coating for maximum durability$332.70 - $359.85
- Transtar Industries®Less™ Automatic Transmission Overhaul KitGMC G-Series 1978, Less™ Automatic Transmission Overhaul Kit by Transtar Industries®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level...Superior in durability and wear resistanceSuperior proprietary coating for maximum durability$85.99 - $126.91
- Transtar Industries®Master™ Automatic Transmission Master Rebuild KitGMC G-Series 1978, Master™ Automatic Transmission Master Rebuild Kit by Transtar Industries®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high...Superior in durability and wear resistanceSuperior proprietary coating for maximum durability$121.55 - $143.09
- USA Standard Gear®Transmission Bearing & Seal KitGMC G-Series Saginaw Transmission 1978, Transmission Bearing & Seal Kit by USA Standard Gear®. 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$70.54 - $93.61
- Pioneer Automotive®Automatic Transmission Carrier BushingGMC G-Series 1978, Automatic Transmission Carrier Bushing by Pioneer Automotive®. Designed utilizing the latest technology, this product by Pioneer Automotive features premium quality and will perform better than advertised. Perfect for...Made to deliver reliable service for a long timeRugged construction to withstand harsh conditions$4.82 - $7.35
- Pioneer Automotive®Automatic Transmission Clutch Drum BushingGMC G-Series THM350 Transmission 1978, Automatic Transmission Clutch Drum Bushing by Pioneer Automotive®. Narrow. Material: Bronze. Designed utilizing the latest technology, this product by Pioneer Automotive features premium quality...Made to deliver reliable service for a long timeRugged construction to withstand harsh conditions$5.87
- FTI®Aftermarket Bushing Tail Transmission TailhousingGMC G-Series THM400 Transmission 1978, Aftermarket Bushing Tail Transmission Tailhousing by FTI®. Designed utilizing the latest technology, this product features premium quality and will perform better than advertised. Perfect for your...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$161.10
- J.W. Performance®Transmission Bushing KitGMC G-Series THM400 Transmission 1978, Transmission Bushing Kit by J.W. Performance®. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use which makes it the perfect deal for...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$48.57
- Sonnax®High Performance Heavy Duty Automatic Transmission Case Bushing KitGMC G-Series THM400 Transmission 1978, High Performance Heavy Duty Automatic Transmission Case Bushing Kit by Sonnax®. Case bushing walkout and thrust washer wear are common issues. Sonnax heavy duty case bushing kit combines the tried...Designed to improve your vehicle’s performance for more enjoyable ridesManufactured from premium materials to offer a long-lasting service life$44.77
- J.W. Performance®Power Pack Automatic Transmission Clutch SetGMC G-Series THM400 Transmission 1978, Power Pack Automatic Transmission Clutch Set by J.W. Performance®. Intermediate. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use which...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$76.68
- Transmission Specialties®Forward DrumGMC G-Series THM400 Transmission 1978, Forward Drum by Transmission Specialties®. If you want to rebuild your transmission system so it will improve your vehicle's performance and drivability, rely on this high-quality kit from...High-quality kit to meet all standards set by professional installersUpgrades the feel and response of your automatic transmission$197.98
- Transtar Industries®Automatic Transmission Washer KitGMC G-Series 1978, Automatic Transmission Washer Kit by Transtar Industries®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of...Superior in durability and wear resistanceSuperior proprietary coating for maximum durability$8.64 - $16.74
- Transmission Specialties®Output Shaft BushingGMC G-Series THM400 Transmission 1978, Output Shaft Bushing by Transmission Specialties®. If you want to rebuild your transmission system so it will improve your vehicle's performance and drivability, rely on this high-quality kit from...High-quality kit to meet all standards set by professional installersUpgrades the feel and response of your automatic transmission$8.22
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1978 GMC G-Series Models
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