Collection: SunCoast Transmission
SunCoast Diesel – High-Performance Transmissions & Drivetrain Solutions
SunCoast Diesel is a leader in high-performance transmission systems, torque converters, and drivetrain components for Cummins, Duramax, and Power Stroke diesel trucks. Engineered for superior durability and power handling, our products ensure maximum performance for towing, daily driving, and competitive racing applications.
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Suncoast 300M Alloy Input Shaft, 12-7/8"
Regular price $387.92 USDSale price $387.92 USD Regular priceUnit price / per -
Suncoast 300M Alloy Input Shaft, 12-7/8" - Turbo Splines
Regular price $341.67 USDSale price $341.67 USD Regular priceUnit price / per -
Suncoast 300M Alloy Main Shaft w/ Rolled Splines
Regular price $534.48 USDSale price $534.48 USD Regular priceUnit price / per -
Suncoast 300M Input Shaft, 1-3/16" Diameter - Aluminum FWD / Steel Insert Drum
Regular price $1,772.50 USDSale price $1,772.50 USD Regular priceUnit price / per -
Suncoast 300M Input Shaft, 1-3/16" Diameter - Lightweight Steel FWD / Aluminum Piston Drum
Regular price $1,122.50 USDSale price $1,122.50 USD Regular priceUnit price / per -
Suncoast 300M Input Shaft, OEM Diameter - 4140 HT L/W Steel FWD Drum w/ Aluminum Piston
Regular price $1,122.50 USDSale price $1,122.50 USD Regular priceUnit price / per -
Suncoast 300M Input Shaft, OEM Diameter - Aluminum FWD / Steel Insert, No Piston
Regular price $1,647.50 USDSale price $1,647.50 USD Regular priceUnit price / per -
Suncoast 300M Input Shaft, OEM Diameter - L/W 1045 Steel FWD Drum w/ Aluminum Piston
Regular price $1,022.50 USDSale price $1,022.50 USD Regular priceUnit price / per -
Suncoast 300M Input Shaft, OEM Diameter - Steel FWD Drum, Oversized Drum Spline, No Piston
Regular price $699.88 USDSale price $699.88 USD Regular priceUnit price / per -
Suncoast 300M Intermediate Shaft
Regular price $568.75 USDSale price $568.75 USD Regular priceUnit price / per -
Suncoast 300M Output Shaft, 2-Piece, OEM Length - 8.107" Overall Length, 3.597" Spline Length
Regular price $1,022.50 USDSale price $1,022.50 USD Regular priceUnit price / per -
Suncoast 300M Output Shaft, 2-Piece, Shortened for #701935 - 6.260" Overall Length, 3.685" Spline Length
Regular price $972.50 USDSale price $972.50 USD Regular priceUnit price / per -
Suncoast 300M Output Shaft, 4X4 Length - 6.920" Overall Length, 2.410" Spline Length
Regular price $1,022.50 USDSale price $1,022.50 USD Regular priceUnit price / per -
Suncoast 300M Output Shaft, 4X4 Super Short Length - 5.250" Overall Length, 2.675" Spline Length
Regular price $1,022.50 USDSale price $1,022.50 USD Regular priceUnit price / per -
Suncoast 300M Output Shaft, Powerglide Length - 8.688" Overall Length, 4.178" Spline Length
Regular price $1,022.50 USDSale price $1,022.50 USD Regular priceUnit price / per -
Suncoast 300M Output Shaft, Standard Length - 9.188" Overall Length, 4.678" Spline Length
Regular price $1,022.50 USDSale price $1,022.50 USD Regular priceUnit price / per -
Suncoast 300M Ringless Alloy Input Shaft, 12-7/8" - Turbo Splines
Regular price $525.85 USDSale price $525.85 USD Regular priceUnit price / per -
Suncoast 35 SPLINE SOLID BILLET INPUT SHAFT
Regular price $1,895.00 USDSale price $1,895.00 USD Regular priceUnit price / per -
Suncoast 3rd & 4th Clutch Plate Kit (8 Clutch) - High Energy
Regular price $148.45 USDSale price $148.45 USD Regular priceUnit price / per -
Suncoast 3rd & 4th Clutch Plate Kit (9 Clutch) - High Energy
Regular price $148.45 USDSale price $148.45 USD Regular priceUnit price / per -
Suncoast 3rd & 4th Clutch Plate Kit, Raybestos "Z-Pak" - Requires '88-Up Input Drum
Regular price $270.20 USDSale price $270.20 USD Regular priceUnit price / per -
Suncoast 3rd Accumulator Checkball & Seat
Regular price $22.27 USDSale price $22.27 USD Regular priceUnit price / per -
Suncoast 4-5-6 Clutch Backing Plate
Regular price $134.22 USDSale price $134.22 USD Regular priceUnit price / per -
Suncoast 4-5-6 Clutch Drum Bushing - Pack of 5
Regular price $73.20 USDSale price $73.20 USD Regular priceUnit price / per -
Suncoast 4-5-6 Clutch Steel - .078" Thick
Regular price $30.75 USDSale price $30.75 USD Regular priceUnit price / per -
Suncoast 4-5-6 Clutch Steel - .090" Thick
Regular price $30.80 USDSale price $30.80 USD Regular priceUnit price / per -
SunCoast 4-Ring Accumulator Piston
Regular price $79.00 USDSale price $79.00 USD Regular priceUnit price / per -
Suncoast 4-Wire Pass Through - 3/8 NPT Thread, No Connectors
Regular price $118.47 USDSale price $118.47 USD Regular priceUnit price / per
SunCoast Diesel – High-Performance Transmissions & Drivetrain Solutions
SunCoast Diesel is a leader in high-performance transmission systems, torque converters, and drivetrain components for Cummins, Duramax, and Power Stroke diesel trucks. Engineered for superior durability and power handling, our products ensure maximum performance for towing, daily driving, and competitive racing applications.
Our extensive product lineup includes billet torque converters, transmission rebuild kits, valve bodies, clutch packs, and custom-built performance transmissions—each designed to handle extreme torque and horsepower. Whether you're looking to upgrade for better towing capacity, smoother shifting, or all-out race performance, SunCoast Diesel has the solution.
Built with precision and tested under the toughest conditions, SunCoast Diesel transmissions and components deliver unmatched strength and reliability. Our innovative designs reduce transmission slippage, enhance shift response, and improve overall drivetrain efficiency, making them the preferred choice for diesel enthusiasts and professional builders.
Upgrade your diesel truck’s transmission with SunCoast Diesel’s premium performance parts. Shop now and experience industry-leading durability, efficiency, and power transfer!


















