1978 GMC P-Series Transmission Parts

GMC P-Series Transmission - 1978
Select Your Submodel
Automatic
Standard (Manual)
  • LuK® - RepSet™ Clutch Kit with release bearing
    LuK®RepSet™ Clutch Kit with release bearing
    7
    # 5959548751
    GMC P-Series 1978, RepSet™ Clutch Kit with release bearing by LuK®. Designed and engineered to perfectly match the vehicle’s unique performance characteristics, every LuK RepSet™ is tested and guaranteed to meet critical...
    Engineered and manufactured to OE specificationsPerfectly balanced
    $108.19 - $156.04
  • RhinoPac® - Premium Clutch Kit
    RhinoPac®Premium Clutch Kit
    7
    # 783104845
    GMC P-Series Standard Transmission 1978, Premium Clutch Kit by RhinoPac®. Includes: Pressure Plate, Clutch Disc. Does not Include: Flywheel, Slave Cylinder. Input Shaft Spline: 1.125" x 10 Teeth. Disc Material: Organic. Upgrade your...
    Helps restore factory-like performanceDurable construction for long-term use
    $73.34 - $77.30
  • Hayden® - High Performance Transmission Oil Cooler Kit
    Hayden®High Performance Transmission Oil Cooler Kit
    4
    # 695877718
    GMC P15 / P25 / P35 1978, High Performance Transmission Oil Cooler Kit by Hayden®. Featuring a lightweight aluminum construction, this high performance transmission oil cooler is designed to provide outstanding cooling, as well as...
    SAE 45 degree fittings for maximum reliabilityElectrostatically powder coated to prevent corrosion
    $47.03 - $58.41
  • LuK® - Single Mass Flywheel
    LuK®Single Mass Flywheel
    3
    # 783103849
    GMC P35 Standard Transmission 1978, Single Mass Flywheel by LuK®. LuK conventional flywheels are dynamically balanced to reduce vibration and improve clutch performance. All new – never remanufactured – every flywheel component is...
    Engineered and manufactured to OE specificationsAll new components - including ring gear and dowel pins
    $79.40 - $100.95
  • EXEDY® - OEM Clutch Kit
    EXEDY®OEM Clutch Kit
    9
    # 4753869145
    GMC P-Series Standard Transmission 1978, OEM Clutch Kit by EXEDY®. Does not Include: Flywheel. Input Shaft Spline: 1 1/8" x 10 Teeth. Replace your failing OEM clutch with a new, OEM-quality EXEDY clutch assembly. EXEDY is a Tier 1...
    Manufactured on same production line as original equipment clutch componentsMeets or exceeds OEM standards
    $232.77 - $273.47
  • Sachs® - Clutch Kit
    Sachs®Clutch Kit
    2
    # 1711586704
    GMC P-Series Standard Transmission 1978, Clutch Kit by Sachs®. Does not Include: Flywheel. Input Shaft Spline: 1 1/8" x 10 Teeth. Disc Center Style: Non-Cam Hub. Pressure Plate Style: Diaphragm. Disc Material: Organic. Each Sachs clutch...
    Manufactured on same production line as original equipment clutch componentsMeets or exceeds OEM standards
    $111.15 - $123.56
  • Perfection® - Clutch Kit
    Perfection®Clutch Kit
    5
    # 1737472922
    GMC P-Series Standard Transmission 1978, Clutch Kit by Perfection®. Includes: Cover, Disc, Release Bearing, Pilot Bearing/Bushing, Alignment Tool, Spline Lubricant. Does not Include: Flywheel. Input Shaft Spline: 1.125" x 10 Teeth....
    Conventional designs engineered for installation ease and a more economical, complete clutch jobPerformance Clutch Kits and high clamp load designs for those applications where the OE Clutch Kit requires operating enhancements
    $90.05 - $185.53
  • Perfection® - Flywheel
    Perfection®Flywheel
    0
    # 1219408676
    GMC P-Series Standard Transmission 1978, Flywheel by Perfection®. Flywheel Tooth Number: 168. Designed utilizing the latest technology, this product by Perfection features premium quality and will perform better than advertised. Perfect...
    OE Self Adjusting Clutch Kits alternatives (conventional designs engineered for installation ease and a more economical, complete clutch job)Performance Clutch Kits and high clamp load designs for those applications where the OE Clutch Kit requires operating enhancements
    $86.68 - $115.52
  • Valeo® - OEM Clutch Kit
    Valeo®OEM Clutch Kit
    1
    # 1565663592
    GMC P-Series Standard Transmission 1978, OEM Clutch Kit by Valeo®. Includes: Alignment Tool, Clutch Disc, Pilot Bearing, Pressure Plate, Release Bearing. Does not Include: Flywheel. Input Shaft Spline: 1 1/8" x 10 Teeth. Replace your...
    Valeo's Clutch Kit comes with all the necessary components to do a complete clutch installationLong life, smooth engagement, original equipment form, fit and function
    $127.13 - $375.28
  • EXEDY® - Slave Cylinder
    EXEDY®Slave Cylinder
    2
    # mpn4933806689
    GMC P35 7.4L with Diaphragm Non Pre-Damped Clutch, 12" Clutch 1978, Slave Cylinder by EXEDY®. Designed utilizing the latest technology, this product by EXEDY features premium quality and will perform better than advertised. Perfect for...
    Precision honing of hydraulic cylinders are monitored under OE quality control standards.Anodyzing plating of cylinder bodies strengthens surface, ensuring smooth operation of the piston, and resists corrosion.
    $18.85
  • Dacco® - Automatic Transmission Torque Converter
    Dacco®Automatic Transmission Torque Converter
    2
    # 1311585477
    GMC P-Series 1978, Automatic Transmission Torque Converter by Dacco®. Dacco offers the most extensive line of torque converters in the industry. Dacco has the right torque converter products for your needs, covered by unbeatable no...
    Perfect to improve your vehicle’s performanceMade from high-strength materials for exceptional durability
    $116.37
  • Sachs® - Single Mass Flywheel
    Sachs®Single Mass Flywheel
    1
    # 1711637784
    GMC P-Series Standard Transmission 1978, Single Mass Flywheel by Sachs®. All flywheels are manufactured to meet or exceed OEM standards. Sachs offers a full range of application coverage for the most popular domestics and import...
    Manufactured on same production line as original equipment clutch componentsMeets or exceeds OEM standards
    $75.79 - $99.35
  • Platinum Driveline® - Clutch Kit
    Platinum Driveline®Clutch Kit
    0
    # 3950956580
    GMC P-Series Standard Transmission 1978, Clutch Kit by Platinum Driveline®. With Pilot Bushing. Input Shaft Spline: 10 Teeth. This premium product is the best way to go for those looking for the highest quality replacement that offers...
    Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
    $148.81 - $275.46
  • Four Seasons® - Rapid-Cool Automatic Transmission Oil Cooler
    Four Seasons®Rapid-Cool Automatic Transmission Oil Cooler
    0
    # 1425936192
    GMC P-Series Automatic Transmission 1978, Rapid-Cool Automatic Transmission Oil Cooler by Four Seasons®. Without Bypass. Does not Include: Electric Fan, Fittings, Gasket, Spring. All products are engineered and tested to provide years...
    OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
    $53.33 - $67.56
  • Hayden® - Rapid-Cool™ Transmission Oil Cooler Kit
    Hayden®Rapid-Cool™ Transmission Oil Cooler Kit
    0
    # 695880712
    GMC P15 / P25 / P35 1978, Rapid-Cool™ Transmission Oil Cooler Kit by Hayden®. This premium transmission oil cooler features a unique plate and fin design, which is 33% more efficient than a comparable tube and fin design. Thanks to...
    Compatible with OEM cooler systemsUnique plate and fin design
    $49.10 - $72.13
  • Timken® - Clutch Release Bearing
    Timken®Clutch Release Bearing
    1
    # mpn2033730
    GMC P15 / P25 / P35 without 250mm Clutch 1978, Clutch Release Bearing by Timken®. Bore: 1.3775". Outside Diameter: 2.76". Width: 1.246". Fork Groove Diameter: 1.625". Fork to Face: 0.66". Get optimum vehicle performance with Timken...
    Designed to effectively reduce frictionUltimate load handling capability
    $34.13
  • Four Seasons® - Ultra-Cool Automatic Transmission Oil Cooler
    Four Seasons®Ultra-Cool Automatic Transmission Oil Cooler
    1
    # 1425866360
    GMC P-Series Automatic Transmission 1978, Ultra-Cool Automatic Transmission Oil Cooler by Four Seasons®. Does not Include: Electric Fan, Bracket, Fittings, Gasket. All products are engineered and tested to provide years of trouble free...
    OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
    $43.32 - $88.57
  • LuK® - Pro Gold Performance™ Clutch Kit
    LuK®Pro Gold Performance™ Clutch Kit
    7
    # 2023055044
    GMC P-Series Transmission with Flat Flywheel, 12" Clutch / 12" Heavy Duty Clutch 1978, Pro Gold Performance™ Clutch Kit by LuK®. Does not Include: Flywheel. Disc Outer Diameter: 11 7/8". Input Shaft Spline: 1 1/8" x 10 Teeth. Disc...
    Heavy-duty, premium-quality clutch componentsHigh-friction coefficient facings
    $138.14
  • National® - Clutch Release Bearing
    National®Clutch Release Bearing
    0
    # mpn1285351
    GMC P15 / P25 / P35 1978, Clutch Release Bearing by National®. Bore: 1.378". Outside Diameter: 2.76". Width: 1.246". Design: Sealed Self-Aligning. This bearing is manufactured from high quality steel and constructed utilizing...
    Possesses excellent antifriction propertiesManufactured utilizing computer controlled heat treatment processes for lasting performance
    $22.86
  • Derale Performance® - Series 8000 Plate and Fin Transmission Cooler Kit
    Derale Performance®Series 8000 Plate and Fin Transmission Cooler Kit
    0
    # 4099930032
    GMC P-Series Automatic Transmission 1978, Series 8000 Plate and Fin Transmission Cooler Kit by Derale Performance®. Depth: 7/8". Inlet Diameter: 10 1/4". Mounting: 6 3/4" x 8". Construction: Aluminum. A step up from Tube and Fin type...
    Embossed turbulators inserted in each tube agitate fluid for maximum heat transferImproves transmission performance
    $71.39 - $83.99
  • Pioneer Automotive® - Automatic Transmission Flexplate
    Pioneer Automotive®Automatic Transmission Flexplate
    1
    # 733987609
    GMC P-Series 1978, Automatic Transmission Flexplate by Pioneer Automotive®. Teeth Quantity: 168. Designed utilizing the latest technology, this product by Pioneer Automotive features premium quality and will perform better than...
    Made to deliver reliable service for a long timeRugged construction to withstand harsh conditions
    $35.38 - $87.63
  • Hayden® - Ultra-Cool™ Transmission Oil Cooler Kit
    Hayden®Ultra-Cool™ Transmission Oil Cooler Kit
    0
    # 695876713
    GMC P-Series 1978, Ultra-Cool™ Transmission Oil Cooler Kit by Hayden®. This product is an effective and economical way to keep your transmission at its optimum operating temperature. The high-efficiency turbulators in every tube...
    Compatible with OEM cooler systemsUltrasonically soldered for reliability
    $36.50 - $113.02
  • RhinoPac® - SR100 Series Clutch Kit
    RhinoPac®SR100 Series Clutch Kit
    1
    # 1959089455
    GMC P-Series Standard Transmission 1978, SR100 Series Clutch Kit by RhinoPac®. Does not Include: Flywheel, Slave Cylinder. Pressure Plate Style: Diaphragm. Disc Material: Hybrid Organic made with Kevlar. The SR100 Series for the utility...
    Engineered for applications with stock engines and/or mild upgrades of 50 horsepower or lessIdeal for applications where aggressive up shift and downshift capability is important combined with stock like driveability
    $95.64 - $172.73
  • Sachs® - Ceramic Button Clutch Kit
    Sachs®Ceramic Button Clutch Kit
    0
    # mpn4666072985
    GMC P15 / P25 / P35 Standard Transmission 1978, Ceramic Button Clutch Kit by Sachs®. Disc Outer Diameter: 12". Input Shaft Spline: 1 1/8" x 10 Teeth. Disc Type: Non-Cam Hub. Pressure Plate Style: Diaphragm. Ceramic Button set is suited...
    Designed for the most extreme applicationsRecommended for use on severe use vehicles where maintaining a high clamp load is vital
    $172.06
  • Sachs® - Heavy Duty Clutch Kit
    Sachs®Heavy Duty Clutch Kit
    0
    # mpn4666073011
    GMC P15 / P25 / P35 Standard Transmission 1978, Heavy Duty Clutch Kit by Sachs®. Includes: Heavy Duty Clutch Disc. Disc Outer Diameter: 12". Input Shaft Spline: 1 1/8" x 10 Teeth. Disc Type: Non-Cam Hub. Pressure Plate Style: Diaphragm....
    Steel-backed lining for higher heat resistanceEnhanced lining for increased performance
    $150.23
  • Perfection® - ZOOM Street Performance Clutch Kit
    Perfection®ZOOM Street Performance Clutch Kit
    0
    # 1423988080
    GMC P-Series Standard Transmission 1978, ZOOM Street Performance Clutch Kit by Perfection®. Does not Include: Flywheel. Disc Material: Organic. Designed utilizing the latest technology, this product by Perfection features premium...
    OE Self Adjusting Clutch Kits alternatives (conventional designs engineered for installation ease and a more economical, complete clutch job)Performance Clutch Kits and high clamp load designs for those applications where the OE Clutch Kit requires operating enhancements
    $154.88 - $347.17
  • ATP® - Automatic Transmission Flexplate
    ATP®Automatic Transmission Flexplate
    1
    # 1425990186
    GMC P-Series 1978, Automatic Transmission Flexplate by ATP®. OD: 14.13". Teeth Quantity: 168. ATP flex plates are made of high quality steel and contain the correct bolt hole spacing and ring gear teeth just like the original part to...
    OE quality at an affordable priceOE fit and function
    $30.02 - $74.15
  • SCAT® - Race Flexplate
    SCAT®Race Flexplate
    0
    # 492637347
    GMC P-Series Automatic Transmission 1978, Race Flexplate by SCAT®. Get the most out of your racing experience with Scat. Manufactured using only premium materials and advanced technologies, this product will provide you with the quality...
    $80.70 - $89.38
  • Pioneer Automotive® - Valve Body Kit
    Pioneer Automotive®Valve Body Kit
    0
    # 724510284
    GMC P-Series Automatic Transmission 1978, Valve Body Kit 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
    $57.50 - $76.15
  • Transmission Specialties® - Street/Strip™ XHD Big Shot Torque Converter
    Transmission Specialties®Street/Strip™ XHD Big Shot Torque Converter
    0
    # 693589398
    GMC P-Series Automatic Transmission 1978, Street/Strip™ XHD Big Shot Torque Converter by Transmission Specialties®. Diameter: 10". This Transmission Specialties converter simply loves power and is amazingly efficient in high...
    Most efficient torque converter on the marketSpragless converter for unsurpassed durability
    $593.95 - $808.19




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1978 GMC P-Series Transmission Reviews

1 review
After installing the Eneos my transmission shifts much smoother. I am quite impressed by the quality of this product. Also it is made specifically for the WS application not some one size fits all fluid. I liked it so much I bought more.
Posted by Alan (Saint Paul, MN) / August 21, 20212015 Toyota Venza
1978 GMC P-Series Models
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