SNOWMAGEDDON SALE

FREE GROUND SHIPPING ON ALL ORDERS • Code: SNOWEDIN

*One-way shipping only. Excludes "Guardian" transmissions. Residential liftgate charges may apply with transmission orders. Lower 48 only — Not valid for AK or HI.

Covid-19 Update: Shipping may be delayed due to supplier product availability. We apologize for any inconvenience.
When Reliability Matters

Put It in the Hands

Of the Ones You Trust the Most
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Transmissions

Transmissions

Assembled here in the USA with proven parts and techniques. Tow. Street. Race. GET MORE!

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Suncoast Transmissions Dodge Dodge
Suncoast Transmissions Ford Ford
Suncoast Transmissions Chevy/GMC Chevy / GMC
Converters

Converters

Prideful in the quality of work that goes into our products. The strongest, fastest torque converters.

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Suncoast Converters Dodge Dodge
Suncoast Converters Ford Ford
Suncoast Converters Chevy/GMC Chevy / GMC
Rebuild Kits

Rebuild Kits

SunCoast transmission rebuild kits set the bar. The BEST of the BEST.

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Suncoast Rebuild Kits Dodge Dodge
Suncoast Rebuild Kits Ford Ford
Suncoast Rebuild Kits Chevy/GMC Chevy / GMC

SunCoast Specials

2.84 Gear Ratio Planet
2.84 Gear Ratio Planet
4l80E Billet Overdrive Planet
4l80E Billet Overdrive Planet
6L80E Rear Planetary Assembly with 4140 HTSR Billet Steel Drive Plate
6L80E Rear Planetary Assembly with 4140 HTSR Billet Steel Drive Plate
Smart-Tech Input Housing Kit
Smart-Tech Input Housing Kit
SunCoast 8HP90 Snake Charmer
SunCoast 8HP90 Snake Charmer
TH400/4L80E Aluminum Direct Drum & Extra Large Sprag
TH400/4L80E Aluminum Direct Drum & Extra Large Sprag
Check Out These

Stocking Distributors

10L90 XPL PRO-LOC BILLET TORQUE CONVERTER
10L90 XPL PRO-LOC BILLET TORQUE CONVERTER This new 10-Speed Bolt-Together Torque Converter is manufactured from a solid piece of 7075 T6 billet aluminum plate versus round bar like so many other manufacturers. We take this extra step in manufacturing from solid billet plates due to the superior heat-treating characteristics. When using round bar, we see the tempering is not as solid in the center as with the solid plate. Using this type of material increases manufacturing cost initially, as well as machine operation time, however is a necessary step when considering the high inertia and its effects on ballooning the converter. Learn More
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Suncoast Performance Do What You Cant... A look into the lifestyle

These knuckleheads think diesels are stupid. What do y'all think?

4l80E Billet Overdrive Planet
4l80E Billet Overdrive Planet It is not uncommon to see the splines stripped out of the overdrive planet on 4L80E's. The becomes a more prominent in higher horsepower applications or vehicles with larger wheel's and tires. This new billet 4L80E overdrive planet eliminates this by manufacturing the turbine splines from 4140 heat treated stress relieved steel. Learn More

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Meet some of the brightest minds in the Industry

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Our Customers Love:

SunCoast carries quality-designed and manufactured transmission parts & some badass apparel to rep that SunCoast Life. Whether sled pulling, drag racing or hauling heavy loads, SunCoast has you covered.

Heavy Duty Input Shaft
Heavy Duty Input Shaft
Heavy Duty Output Shaft 4WD/AWD
Heavy Duty Output Shaft 4WD/AWD
Pinless Accumulator Piston Kit
Pinless Accumulator Piston Kit

Dealer Benefits

Leading the diesel transmission industry in innovation. SunCoast takes great pride in providing their authorized dealers with the best products and most accurate tech support possible. This translates to a seamless experience for the customer from the manufacturer to the dealer.

  • Complete Access to the SunCoast Product Line
  • Co-op Advertising Campaigns
  • Access to SunCoast Marketing Materials
  • Access to Unlimited Technical Data & Resources
  • Incentive Volume-based Pricing
  • Unparalleled Customer Service
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