Availability
Sierra Marine drive unit caps are made to outperform the original equipment part(s) they are replace. Each Sierra product is engineered to withstand the harsh marine environment while meeting today's high horsepower engine specifications. Order the drive unit component designed for your application.
Not Yet Reviewed
$253.99
Clearance
Sierra Marine offers a wide range of watercraft drive unit replacement parts, including U-joint assemblies for various GLM, Mallory, OMC, Volvo Penta, and Mercruiser stern drive applications. Each component is manufactured with factory materials in accordance with OE specifications to ensure proper fitment and long-lasting performance.
Not Yet Reviewed
$578.99
$285.99
—
$401.99
Sierra Marine shafts meet or exceed the original equipment part it replaces. These marine drive unit components are available for use in Mercruiser Alpha, Gen II, Bravo I/II/III and Vazer engine applications. Includes one upper swivel gimbal ring shaft. Order the model for your application needs.
Not Yet Reviewed
$320.99
Sierra Marine offers prop shafts developed for use with OMC and Johnson/Evinrude engines. They have a lot of great features, including exceptional performance quality, durability, and high reliability. Sierra's propeller shafts are made with the industry's best-grade materials and are finished with a minimal quality of leftover tensions, and they are corrosion-resistant. All Sierra products are equal to or better than the original equipment parts that they are meant to replace. For more than 50 years, Sierra has been unmatched in quality and backed by rigorous engineering, testing, and manufacturing standards to produce the best parts in the marine industry. Sierra Marine's commitment to excellence ensures the highest degree of confidence where it counts the most: out on the water. Order the prop shaft designed for your application needs.
Not Yet Reviewed
$359.99
—
$425.99
Sierra Marine offers kits to help you rebuild your gear box. Each kit contains the gears you need to get your boat back on the water. Order the model recommended for your watercraft engine application.
Not Yet Reviewed
$288.99
—
$480.99
Sierra Marine offers a wide range of OEM-equivalent parts to maintain and/or repair your watercraft, including gearcase overhaul kits. These overhaul kits are designed to replace outdated or damaged components to restore performance and functionality and have been engineered to meet today's high horsepower engine demands while withstanding the harsh marine environment. For over 50 years, Sierra Marine has supplied the best aftermarket parts in the marine industry—so boaters can enjoy the best of times on the water. Upgrade your boat with Sierra's gearcase overhaul kits.
Not Yet Reviewed
$386.99
Sierra Marine forward gear sets replace old worn gears with renewed performance. Offering an OE fit and function, they include forward and pinion gears. Service your boat with Sierra forward gear sets.
Not Yet Reviewed
$353.99
Sierra is a leading supplier of marine engine and drive parts, offering 1,000's of parts including driveshafts. These quality components are designed to meet or exceed the OE part(s) they replace. For 50 years, Sierra Marine has proudly offered high-quality engine and drive parts as a trusted name in the marine industry. All Sierra Marine products are engineered to meet today's high horsepower engine demands, while withstanding the harsh marine environment. Choose the driveshaft designed for your application needs.
Not Yet Reviewed
$489.99
Sierra Marine offers gearcase seal kits for the purpose of sealing a connection between two parts or flanges with flat surfaces with accuracy for trouble-free installation, functioning, and safety. Wherever a union or flange is necessary, gaskets stop leaks, and replacement is recommended each time the equipment is taken apart and reassembled with the new gasket. For decades, Sierra has proudly been offering high-quality engine and drive parts and accessory kits as a trusted name in today's marine industry. Order the Sierra Marine gearcase seal kit designed for your application needs.
Not Yet Reviewed
$296.99
Trail-Gear unit hubs are not just another aftermarket 1-ton unit hub that's been machined down and modified from an 8-lug to a 6-lug application. No, Trail-Gear designed these units for a specific application, so the hubs will bolt right onto Dana 60 or 9 in. housings that are set up for unit hubs. They're made to accommodate a 30- or a 35-spline axle shaft and use a 1/2 in.-20 threaded wheel stud with a 6 x 5.5 in. wheel bolt pattern. These are the same unit hubs that you will see on most competition buggies. They are ultra-strong and easy to replace. Simply unbolt the old one and bolt on the new replacement hub. This is a much simpler and stronger unit then the stock spindles being replaced. All unit hubs include integrated roll pin to prevent the spindle nut from coming loose.
( 1 )
$549.99
On Sale
MSD Atomic transmission control modules are designed to adjust the operating parameters of later model electronically controlled 4-speed automatic overdrive transmissions. They're simple to configure with the supplied hand-held monitor--no PC required. You now have access to adjust shift points, adjust torque converter clutch behavior, select different levels of shift firmness, select between auto-shift and manual shift mode, and activate dyno mode to deliver repeatable chassis dyno results. The included hand-held monitor connects to them and can be left in place as a dashboard to monitor the transmission in real time, or can be disconnected when the configuration is complete. Once installed, these modules need only a few basic parameters to complete the initial setup. First, select the type of transmission you are using--all supported transmission types are listed in the menu. Other required fields include the number of engine cylinders, rear-end gear ratio, and tire height. Once this has been completed, you can now start and drive the vehicle, while taking advantage of the advanced setup menu items to dial-in the transmission to your liking. You can feel the results in real-time as a passenger manipulates the parameters and monitors the real-time data. Data available for viewing includes engine speed, vehicle speed, throttle position, transmission fluid temperature, shifter position, and commanded gear. Best of all, the MSD Atomic transmission control modules are available as completely stand-alone units or Brainwave-compatible for the Atomic EFI systems. A transmission controller harness is sold separately.
( 19 )
$349.95
Clearance
Evolution Driveline transfer cases are remanufactured to meet or exceed OEM specifications to provide superior quality with perfect fit and function. Each transfer case passes a comprehensive battery of tests in Evolution Driveline's test center before being packaged and shipped. To enable you to buy with confidence, their computerized test center recreates actual driving conditions to analyze the performance of each transfer case. Evolution Driveline is the first manufacturer to offer hybrid problem-solving transfer cases that marry aftermarket solutions to OE-quality remanufactured products. Additional features: * Problem-solving applications include Jeep transfer cases with slip yoke eliminator kits and GM cases with oil pump wear-savers installed * Backlash, mesh load, leak, and rotational torque quality-control testing is performed on every unit * OEM cores are processed as individual units throughout the teardown and assembly process * Cores are cleaned using UMC ReTech's hydro-blast cleaning and rinse process * All case halves are wet sanded to ensure perfect mating surfaces * Loctite gasket eliminator and primer is used to seal all aluminum mating surfaces * Remanufactured in a ISO9001:2008 USA facility * 12 month/12,000 mile limited warranty
( 1 )
$606.99
$399.50
Clearance
BCA Bearing by NTN wheel bearing and hub assemblies are premium OE-quality units with application-specific design and engineering for reduced noise, vibration, and harshness, as well as extended life. BCA Bearing by NTN wheel bearing and hub assemblies will include one of their superior Gen 1, Gen 2, and Gen 3 hubs—high-quality wheel end replacement parts for domestic and import vehicles.
( 10 )
$250.99
—
$430.99
Timken Bearing wheel bearing and hub assemblies are the key to restoring your vehicle's smooth and safe ride. They're made to meet or exceed OEM specifications and are available for a variety of domestic and import vehicles. ABS sensors are included where necessary. Order the replacement model needed for your application.
( 235 )
$250.99
—
$472.99
ATI PCS (Powertrain Control Solutions) offers automatic transmission controller replacement harnesses for model 705500, GM transmission 4L80-E or 4L85-E. The factory harness will work with carburetor or EFI applications.
Not Yet Reviewed
$251.99
The Holley Sniper Transmission Controller (STC) is designed for common GM and Ford electronic 4-speed automatic transmissions. Three part numbers cover a complete range of applications—all Sniper EFI systems, Sniper 2 EFI-specific (M8 CAN connection), or a full standalone unit. The Sniper specific applications connect to your Sniper EFI system via CAN bus and are programmed through the existing Sniper 3.5 in. touch screen. No programming is available with PC computer software; however, the transmission functions can be data-logged and reviewed with Sniper PC software. The Standalone version includes a dedicated 3.5 in. touch screen and is primarily intended for carbureted engine combinations. GM and Ford 4-speed electronic overdrive transmissions are simple in operation. They have four speeds, with the top gear being an overdrive; and all have a lockup torque converter that eliminates any slippage when the lockup is applied. With a stock torque converter, the lockup should only be applied under light throttle conditions or excessive wear will occur. Upshifts, downshifts, and torque converter lockup are based on vehicle speed and throttle position (or optionally the MAP sensor) and are adjustable with the 3.5 in. touch screen. P/N 551-100: Replacement controller unit only P/N 551-101: Controller unit and power harness only P/N 551-102: Standalone kit for carbureted applications (includes power harness and hand-held programmer) P/N 551-103: Controller unit and power harness for use with Sniper 2 EFI systems Holley Sniper Transmission Controller features: * Adds electronic transmission control functionality to a Sniper 2 * Controls conventional electronic 4-speed transmission applications. GM 4L60/70/80E and Ford AODE and 4R70W - transmission specific harnesses sold separately: -- 558-405 – GM 4L60/70/80E -- 558-455 – 2009+ GM 4L60E -- 558-470 – 1998+ Ford 4R70W/4R75W -- 558-471 – 1992-1997 Ford AODE/4R70W * Tuning is performed through the 3.5 in. touch screen LCD (included with the Standalone version). Future compatibility will include 5 in. display and Bluetooth module * Tune upshifts, downshifts and WOT shift points * Full programmability of torque converter lockup * Full tuning of transmission line pressure (shift firmness) * Controls and layouts interface mirror Dominator and Terminator X MAX ECUs (except no paddle shift) * A MAP sensor is needed if using MAP for line pressure, which is usually only done with forced induction applications
( 1 )
$499.95
For the ultimate upgrade, replace your worn CV joints with new ones from RCV Performance. CV joints are crucial components in vehicles, primarily in front-wheel-drive (FWD) systems, but they are also used in other drive configurations. The CV joints connect the drive shafts to the transmission and wheels, enabling the transfer of power. Their primary purpose is to transfer torque from the transmission to the wheels, allowing the drive shafts to bend and flex without causing the wheels to lose power or have uneven speed distribution. This is essential for smooth and consistent power delivery, especially during turns and when the suspension moves. These CV joints by RCV are available for Volvo C303, 30-spline, Dana 44, Dana 60 and Dana 60 300M applications.
Not Yet Reviewed
$339.95
Using one of these RCV Performance axle drive slug kits, specifically designed for 2005 and up Ford Super Duty F250/F550 models, offers enhanced strength and durability for your axles, particularly when dealing with extreme driving conditions and rock bouncing. The kits are built with high-quality materials like alloy steel drive pucks and 6061 aluminum caps, and the flange outers come in anodized finishes and are engraved with RCV's famous mountain and flag RCV Logo. Each kit includes all the necessary hardware, including O-rings, for a complete and easy installation.
Not Yet Reviewed
$359.95
On Sale
Yukon Gear & Axle Dura Grip positraction carriers offer great traction and strength, and yet are not overly aggressive for the streets. These nodular iron or steel replacements are 4-spring, Raybestos composite, clutch-style, limited-slip carriers—with internal gears machined from forged 4320 steel with stronger teeth. Assembled in the USA, the Yukon differential carriers are rebuildable, allowing for repairs or modifications without buying a new unit. They're available for fitment with nearly two dozen axle models. What are you using to transfer power? Choose smooth operation with strong lockup abilities to transfer torque—benchmarks of the Yukon Gear & Axle Dura Grip positraction carriers.
( 137 )
$358.00
—
$609.99
$322.20
—
$518.49
Ford Performance Parts Traction-Lok differentials optimize your vehicle's traction by transferring the power to both rear wheels. These limited slip differential units use heavy plate-style clutches to ensure your engine's full power potential makes it to the ground. Perfect for the street or strip, these differentials will accommodate the anti-lock brake exciter ring found on most late model vehicles.
( 37 )
$352.99
—
$480.99
Summit Racing™ Ford 9 in. Trac-Loc differentials replace your OE units with strength and value. Our 4-pin limited slip units are new, not remanufactured, with more strength than your stock piece. Summit Racing™ Trac-Loc's are ready for your heavy-duty application at a lighter price making them a popular racing must have. These differentials are built with a steel case and extra support material in crucial areas, so you can do burnouts at the track on the weekend and drive it to the grocery store on Monday without worries. Aim your engine power at your wheels with Summit Racing™ Ford 9 in. Trac-Loc differentials.
( 34 )
$379.99
The durable, jam-proof design of Winters Sidewinder standard automatic shifters enables you to slam gears--while the fail-safe gate layout makes it impossible to accidentally shift into reverse. The units are available in standard forward or reverse shift patterns and include linkage hardware and 5 ft. shifter cable. Winters shifters are ready to install on various GM, Ford, and Chrysler models equipped with automatic transmissions.
( 166 )
$267.99
—
$365.99
FTI Performance ESR Series torque converters are designed for mildly modified vehicles. They're built using Torrington bearings, race-prepped sprague hardened impeller hub, hardened turbine hub and splines, a new steel pilot, and laser-cut mounting ring. These units are available in a variety of sizes, advertised flash stall ratings, and numerous other options. Order the torque converter recommended for your transmission application.
( 64 )
$479.00
Made on state-of-the-art CNC equipment, ATI SFI flexplates are double MIG/TIG-welded with certified American-made materials that far exceed SFI specs for safety. They're manufactured and toleranced from actual OEM drawings to ensure precise fit and location. Each is quality-inspected to exceed the flatness and runout tolerances of the OEM units. They are also precision-balanced on Hines digital equipment with a resolution of 1/10 oz. per inch. Available in dozens of configurations, ATI SFI flexplates can be ordered for fitment on vehicles covering every decade since the mid-1950s.
( 73 )
$258.99
—
$329.00
Modal Header
Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
Gifts, Clothing, & More
Circle Track
Street Rod
Powersports
Paint & Body
Marine
Jr Dragster
