1978 Mazda Cosmo Transmission Parts
Select Your Submodel
- Clutch Kits
- Automatic Transmission Oil Coolers
- Transmission Mounts
- Solenoids, Sensors, Switches, Control Units
- Transmission Filters
- Pans, Drain Plugs, Filler Caps
- Clutch Hydraulics
- Seals & Gaskets
- Rebuild Kits
- Clutch Release Bearings
- Bearings
- Automatic Transmission Oil Pumps
- Automatic Transmission Governors, Modulators
- Clutch Discs
- Transmission Fluids, Oils & Additives
- Hayden®High Performance Transmission Oil Cooler KitMazda Cosmo 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 complement...SAE 45 degree fittings for maximum reliabilityElectrostatically powder coated to prevent corrosion$45.02 - $52.91
- Four Seasons®Rapid-Cool Automatic Transmission Oil CoolerMazda Cosmo 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 of...OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$52.63 - $60.95
- Four Seasons®Ultra-Cool Automatic Transmission Oil CoolerMazda Cosmo Automatic Transmission 1978, Ultra-Cool Automatic Transmission Oil Cooler by Four Seasons®. All products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of car parts experience,...OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$34.32 - $43.88
- Hayden®Ultra-Cool™ Transmission Oil Cooler KitMazda Cosmo 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 direct...Compatible with OEM cooler systemsUltrasonically soldered for reliability$27.04 - $32.70
- Hayden®Rapid-Cool™ Transmission Oil Cooler KitMazda Cosmo 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 its...Compatible with OEM cooler systemsUnique plate and fin design$40.70 - $59.16
- National®Automatic Transmission Oil Pump SealMazda Cosmo 3N71B Transmission 1978, Automatic Transmission Oil Pump Seal by National®. Front. OD: 2.379". Material: Fluoro-Elastomer. Width: 0.276". Housing Bore: 2.362". Shaft: 1.654". Don’t just repair a leak, prevent future...Delivers quality and reliable performance for every type of repairLow swell in hydrocarbon fluids$9.64
- ATP®Automatic Transmission Filter KitMazda Cosmo L3N71B Transmission 1978, Automatic Transmission Filter Kit by ATP®. Premium. ATP Transmission filters are designed to keep the life blood of your transmission (transmission fluid) clean. Every transmission will eventually...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$11.39 - $18.36
- Fel-Pro®Automatic Transmission Oil Pan GasketMazda Cosmo 3N71B Transmission 1978, Automatic Transmission Oil Pan Gasket by Fel-Pro®. Bolt Hole Quantity: 14 Bolt Holes. If you need durable gaskets to prevent leaks on your vehicle, Fel-Pro is the way to go. Engineered using the...Direct OEM replacement for a proper fitEnsures reliable sealing performance$9.56
- Pioneer Automotive®Automatic Transmission Oil Pan GasketMazda Cosmo L3N71B Transmission with 14 Bolt Holes 1978, Automatic Transmission Oil Pan Gasket by Pioneer Automotive®. Material: Fibre. Designed utilizing the latest technology, this product by Pioneer Automotive features premium...Made to deliver reliable service for a long timeRugged construction to withstand harsh conditions$7.79
- SKF®Manual Transmission BearingMazda Cosmo Standard Transmission 1978, Manual Transmission Bearing by SKF®. Location: Front. OD: 3.1496". Width: 0.8268". ID: 1.3780". If you’re looking for premium-quality replacement automotive parts to keep your vehicle performing...Ideal solution to make your vehicle perform as it shouldMade from high-strength materials for exceptional durability$40.95
- National®Automatic Transmission Torque Converter SealMazda Cosmo Transmission with Jatco 3N71B Transmission 1978, Automatic Transmission Torque Converter Seal by National®. Front. Width: 0.276". Inside Diameter: 1.654". Outside Diameter: 2.379". Housing Bore: 2.362". Don’t just repair a...Designed to increase wheel-end reliability by effectively excluding dirt, moisture, and other contaminantsA patent-pending National Dynamic Edge technology allows for maximum protection$9.64
- Four Seasons®Automatic Transmission Oil Cooler HoseMazda Cosmo Automatic Transmission 1978, Automatic Transmission Oil Cooler Hose by Four Seasons®. Does not Include: Electric Fan, Bracket, Fastner, Fittings, Gasket, Mounting Hardware. All products are engineered and tested to provide...OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$12.20
- Four Seasons®Automatic Transmission Oil Cooler Mounting KitMazda Cosmo Automatic Transmission 1978, Automatic Transmission Oil Cooler Mounting Kit by Four Seasons®. All products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of car parts...OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$2.91 - $17.55
- Hayden®Transmission Oil Cooler HoseMazda Cosmo Automatic Transmission 1978, Transmission Oil Cooler Hose by Hayden®. Covered in Black Hypalon. This part provides a safe heat and oil resistant connecting line between your oil cooler and transmission. Manufactured from...Direct replacement for proper fitMade of black chemigum (nitrile)$9.62
- National®Manual Transmission Input Shaft SealMazda Cosmo Transmission with 5-Speed Mazda M5M Transmission 1978, Manual Transmission Input Shaft Seal by National®. Width: 0.354". Inside Diameter: 1.063". Outside Diameter: 1.703". Housing Bore: 1.693". Don’t just repair a leak,...Low swell in hydrocarbon fluidsDesign type: spring loaded; multi-lip$9.34
- Four Seasons®Transmission Oil Cooler CouplingMazda Cosmo Transmission with 1/2"-20 Thread 5/16" Transmission Lines 1978, Transmission Oil Cooler Coupling by Four Seasons®. With Quick Connect Coupler. 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$6.19
- Hayden®Transmission Oil Cooler Mounting KitMazda Cosmo Automatic Transmission 1978, Transmission Oil Cooler Mounting Kit by Hayden®. With this product, you can easily install both your transmission oil cooler and electric fan. This product is made of high-quality materials to...For Installation Of Transmission Coolers And Electric FansProvides quick, effective installation of Hayden products$15.56 - $16.81
- Timken®Clutch Pilot BearingMazda Cosmo 1978, Clutch Pilot 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$16.15
- SKF®Speedi SleeveMazda Cosmo 1978, Speedi Sleeve by SKF®. If you’re looking for premium-quality replacement automotive parts to keep your vehicle performing reliably, you can’t go wrong with superior-grade SKF products. Made using the finest...Ideal solution to make your vehicle perform as it shouldMade from high-strength materials for exceptional durability$25.79 - $28.49
- Dorman®Clutch Alignment ToolMazda Cosmo Standard Transmission 1978, Clutch Alignment Tool by Dorman®. Input Shaft Spline: 0.938" x 22 Teeth. Dorman’s Clutch Alignment Tool is precision made to ensure proper alignment of the clutch during installation. Dorman...Duplicates transmission input shaft dimensions for ease of transmission installationFits securely on your vehicle to prevent damage to the input shaft$3.18
- Pioneer Automotive®Clutch Alignment ToolMazda Cosmo Standard Transmission 1978, Clutch Alignment Tool by Pioneer Automotive®. Size: 15/16" x 22 x 37/64". Designed utilizing the latest technology, this product by Pioneer Automotive features premium quality and will perform...Made to deliver reliable service for a long timeRugged construction to withstand harsh conditions$4.86
- Pioneer Automotive®Control SolenoidMazda Cosmo L3N71B Transmission 1978, Control Solenoid by Pioneer Automotive®. With Harness. Designed utilizing the latest technology, this product by Pioneer Automotive features premium quality and will perform better than advertised....Made to deliver reliable service for a long timeRugged construction to withstand harsh conditions$441.58
- Pioneer Automotive®Modulator ValveMazda Cosmo L3N71B Transmission 1978, Modulator Valve 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$19.73 - $42.03
- Hayden®Transmission Oil Cooler CouplingMazda Cosmo 1978, Transmission Oil Cooler Coupling by Hayden®. Replace your defective oil cooler coupling with this part. Manufactured from premium brass, the part fits most 5/16" transmission lines with 1/2"-20 thread. It is compatible...Fits most 5/16" trans-lines with 1/2"-20 threadCompatible with OEM cooler systems$4.69
- Timken®Manual Transmission Output Shaft SealMazda Cosmo 5A Transmission 1978, Manual Transmission Output Shaft Seal by Timken®. Rear. Width: 0.551". Outside Diameter: 1.900". Housing Bore: 1.890". Timken offers the right seal to keep your vehicle running optimally. Timken seals...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$13.25
- SKF®Automatic Transmission Oil Pump SealMazda Cosmo Automatic Transmission 1978, Automatic Transmission Oil Pump Seal by SKF®. Front. Outside Diameter: 2.374". Take your vehicle out of your garage back to the road by replacing your worn out or defective part with the...Excellent replacement for your worn out or faulty partDesigned to restore original performance and reliability$5.67
- SKF®Automatic Transmission SealMazda Cosmo Automatic Transmission 1978, Automatic Transmission Seal by SKF®. Rear. Outside Diameter: 1.899". If you’re looking for premium-quality replacement automotive parts to keep your vehicle performing reliably, you can’t go...Ideal solution to make your vehicle perform as it shouldMade from high-strength materials for exceptional durability$15.09
- National®Clutch Pilot BearingMazda Cosmo 1978, Clutch Pilot Bearing by National®. OD: 0.7874". Width: 0.6290". Bore: 0.5905". Needle. This bearing is manufactured from high quality steel and constructed utilizing state-of-the-art computer controlled heat treatment...Possesses excellent antifriction propertiesManufactured utilizing computer controlled heat treatment processes for lasting performance$10.14
- SKF®Pilot BearingMazda Cosmo 1978, Pilot Bearing by SKF®. OD: 1.3780". Width: 0.4331". ID: 0.5906". If you’re looking for premium-quality replacement automotive parts to keep your vehicle performing reliably, you can’t go wrong with superior-grade...Ideal solution to make your vehicle perform as it shouldMade from high-strength materials for exceptional durability$14.82
- National®Automatic Transmission Output Shaft Repair SleeveMazda Cosmo Transmission with Jatco 3N71B Transmission 1978, Automatic Transmission Output Shaft Repair Sleeve by National®. Front. Width: 0.571". Flanged Outside Diameter: 2.087". This part is manufactured by one of the most trusted...Designed to repair damaged, grooved or worn shaftsDurable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications$26.47
Shop By Service Type
Popular Products
1978 Mazda Cosmo Transmission Reviews
1 review
Posted by Alan (Saint Paul, MN) / August 21, 20212015 Toyota Venza
Popular Searches