BUICK ROADMASTER Transmission & Drivetrain

Eaton Detroit Truetrac Differentials

Eaton Detroit Truetrac differentials use a patented design of parallel-axis planetary helix gears to provide a quiet, automatic splitting of torque. They perform like a limited-slip differential under normal driving conditions, automatically transferring torque to the wheel with better traction when ground conditions warrant. These replacement units are available for dozens of axle applications.

4.77 out of 5 stars ( 531 )

$642.99

—

$659.99

B&M Tork Master Torque Converters

Tork Master converters are B&M's most affordable performance torque converters. They feature precision pump drive tubes and are pressure tested, fully balanced, and ready to install. The Tork Masters are excellent all-around performance street converters. They are not recommended for big block or supercharged applications.

4.36 out of 5 stars ( 213 )

$478.95

—

$499.95

Richmond Gear Complete Ring and Pinion Installation Kits

Richmond Gear complete ring and pinion installation kits include Grade 8 ring gear bolts, bearings, seals, shims, marking compound, thread-locking compound, and silicone sealer. To ensure proper fitment, order the kit designed for your make/model application.

4.12 out of 5 stars ( 217 )

$155.99

—

$178.99

Motive Gear Ring and Pinion Sets

Motive Gear is the leading manufacturer of driveline products for just about any vehicle, whether it is a stock daily driver or a full-competition 4x4 or race car. They are proud to offer an unmatched selection of quality components engineered and manufactured for the vehicle and for the way it is driven. Motive Gear ring and pinion sets are engineered to meet or exceed OEM specifications at a price that won't break your budget. Their broad selection of ring and pinion ratios is available for just about every vehicle made from the 1940s through the present. All Motive Gear products meet strict quality standards through advanced manufacturing techniques and are backed by their strong warranty. Their in-house quality control lab utilizes state-of-the-art equipment to continuously check Motive Gear products for strength, tolerance, and hardness. Only after meeting stringent quality standards are Motive Gear products packaged and ready for delivery.

4.42 out of 5 stars ( 289 )

$155.99

—

$266.99

TransGo Performance Shift Kits

TransGo's Performance shift kits give you the hard-launching, tire-blazing shifts you want, after just a few hours' work with basic hand tools. TransGo even has kits for computer-controlled, 4-speed automatics. Their performance shift kits can be installed with the transmission in the vehicle and they come with complete instructions. Some kits even include a step-by-step video to walk you through the installation process.

4.69 out of 5 stars ( 524 )

$38.57

—

$295.71

Lokar Midnight Series Flexible Braided Stainless Transmission Dipsticks

Lokar's Midnight Series flexible braided stainless transmission dipsticks feature a heat-resistant PTFE rod with a black braided stainless steel cover. The flexible inner rod is stamped with appropriate trans-fluid levels, and the outer housing has a slim design that allows for mounting them inside of the headers. They're available in both firewall-mount and trans-mount styles, and a funnel adapter is included for assistance with filling. Order the length recommended for your transmission application.

4.66 out of 5 stars ( 82 )

$151.95

—

$176.95

FTI Performance SB Series Torque Converters

FTI Performance SB Series torque converters are an excellent choice for mildly modified engines. They work well in street rods with air conditioning, as well as weekend bracket racers. The converters feature Torrington bearings, hardened impeller hub, hub furnaced and TIG-welded fins, high performance clutch lining, and strengthened sprague.

4.17 out of 5 stars ( 90 )

$404.10

FTI Performance ESR Series Torque Converters

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.

4.64 out of 5 stars ( 67 )

$584.10

—

$649.99

Eaton Posi Performance Differentials

Big torque doesn't have to mean big traction problems. Eaton Posi Performance differentials combine carbon friction discs with precision-forged gears to give you great traction, even under higher torque loads. Plus, the carbon friction discs produce smooth, quiet performance for the life of your vehicle.

4.65 out of 5 stars ( 106 )

$750.99

—

$777.99

Timken Wheel Bearings

Timken wheel bearings are designed to be exact replacements for your OEM wheel bearings. Their steel roller bearing configuration allows for maximum performance without sacrificing durability. Available for a variety of passenger cars, trucks, and SUVs, these Timken wheel bearings will get you back on the road in no time.

4.71 out of 5 stars ( 273 )

$13.99

—

$36.99

TCI Filler Tubes and Dipsticks

TCI introduces a fresh line of quality filler tubes. Applications for the most popular Ford, GM, and Chrysler transmissions are available. Most of the dipsticks feature a locking stick that satisfies sanctioning bodies' racing rules. The rubber boot seal is a vast improvement over the small O-ring typically used on older OEM tube designs.

4.29 out of 5 stars ( 194 )

$65.99

Pioneer SFI Certified Flexplates

Pioneer SFI certified flexplates are machined from high-strength 0.130 in. steel that exceeds factory specifications. They feature bolt patterns punched from OEM blueprints to ensure exact fitment and ring gears that are double-welded for maximum reliability and strength. All of the flexplates are fully inspected and use a dichromate finish to resist corrosion. If your application requires an SFI flexplate, order the Pioneer replacement recommended for your year, make, engine and transmission.

4.43 out of 5 stars ( 70 )

$115.99

—

$144.99

FTI Performance SRL Series Billet Lockup Torque Converters

FTI Performance SRL Series billet lockup torque converters feature a computer-designed, CNC-machined billet front cover and a billet lockup piston--making premature clutch wear a thing of the past. With custom stator designs and multiple blade angle pumps, stalls are available from 2,800-4,400 rpm. They are custom-built to your exact needs and driving style. With furnace-brazed and heli-welded fins, severe-duty sprague, and anti-ballooning flanged impeller hub, these torque converters are virtually indestructible.

4.23 out of 5 stars ( 22 )

$1,099.00

—

$1,099.99

TCI Wireless EZ-TCU Transmission Controllers

TCI Wireless EZ-TCU module kits make it even easier to control your transmission and even remotely disable it to prevent theft. These Bluetooth-enabled controllers allow you to control shift points, firmness, and aggressiveness. Data logging and self-diagnostics make it possible to optimize tuning intuitively--without the need for software, a hand-held unit, or cabling. And they also feature anti-theft—the ability to deactivate your car. TCI Wireless EZ-TCU transmission controllers feature: * Easy transmission control from your phone or tablet; no laptop or software needed * Maximum electronic control over the shift points, shift firmness, and shift aggressiveness * Data logging and self-diagnostics for optimal tuning * Anti-theft feature for disabling vehicle through app * Compatible with 4L60E, 4L65E, 4L70E, 4L80E, 4L85E, and TCI 4x and 6x transmissions * Available for iOS and Android

2.33 out of 5 stars ( 3 )

$1,026.95

Motive Gear Performance Ring and Pinion Sets

Motive Gear Performance ring and pinions are perfect for dedicated racing or off-road vehicles. Their gear sets are made from first-run steel, they never use recycled metal. This allows Motive Gear Performance ring and pinions to handle the extreme torque from high-horsepower racing engines. Extensive engineering, computer-controlled heat treatment, superior strength, quality and the widest selection of racing gear ratios, makes Motive Gear Performance ring and pinions the clear winner! Engineered to the highest standards, every Motive Gear Performance product goes through rigid quality control processes in their in-house lab. Motive Gear Performance also offers a lightweight alternative to standard ring and pinion gear sets. Their AX Series ring and pinions are designed to increase horsepower and efficiency by removing rotating weight. Professional race teams have used custom-lightened drivetrain parts for years, resulting in faster times and more wins. The AX Series gears from Motive are lightened during the manufacturing process; this results in gear sets that have been engineered, not modified. Computer-controlled heat treatment, index tooth spacing, and CNC machining all go into AX Series performance gear sets. Motive Gear Performance: What the pros run!

4.56 out of 5 stars ( 195 )

$309.98

—

$541.99

On Sale

Mr. Gasket Automatic Transmission Oil Pans

These automatic transmission oil pans from Mr. Gasket are stock-depth chrome plated pans. They come complete with a washer and gasket and most have drain plugs.

4.06 out of 5 stars ( 106 )

$77.35

—

$134.95

Pioneer Flexplates

Flexplates are important connections between your engine and torque converter, and are relatively inexpensive parts to change out when they demonstrate signs of wear. These one- or 2-piece Pioneer replacement flexplates are machined from durable steel for long-lasting performance. They're available in a wide variety of configurations for fitment with engine and transmission applications spanning six decades.

4.1 out of 5 stars ( 79 )

$44.99

—

$101.99

B&M Holeshot Torque Converters

A higher-than-stock stall speed as delivered by these B&M Holeshot converters will provide several advantages and benefits to vehicles with modified engines. Many modifications, particularly big cams, tend to reduce low-end power and torque. These high-stall converters allow the engine to launch the car at higher rpm, where more torque is available. They're a very good choice for the typical street machine that is looking for better launch capability and more strength.

3.97 out of 5 stars ( 95 )

$675.95

—

$949.95

Hays Twister 3/4 Race Torque Converters

Hays Twister 3/4 Race performance torque converters are designed to be the perfect solution for your street/strip machine. Hays designed the Twister torque converters to be one step short of being a "Full Race" converter giving you the perfect combination of performance and affordability. Every torque converter is hand built, inspected and tested to ensure they meet the top of the line quality you expect. To ensure consistency and improve performance each converter is built for one transmission with one bolt pattern, meaning a lighter converter to maximize performance. High flow stators promote better cooling and heavy duty Torrington bearings are used to increase strength and durability. Not ready to go a "Full Race" converter, Hays is there for you with their Twister 3/4 Race torque converters.

3.18 out of 5 stars ( 11 )

$779.95

—

$1,049.95

Richmond Gear EXCel Ring and Pinion Sets

Richmond Gear EXCel ring and pinion sets are manufactured to meet the exacting specifications required by Richmond Gear. The design, tooling, steel selection, and heat-treat recipes are all controlled by Richmond Gear to produce cost-alternative ring and pinion sets. The Richmond Gear EXCel ring and pinion sets offer exceptional value with better-than-OEM quality. Available in a wide variety of gear ratios, the Richmond Gear EXCel ring and pinion sets will give you maximum confidence in your differential.

4.19 out of 5 stars ( 149 )

$163.33

—

$235.99

Motive Gear Master Ring and Pinion Installation Kits

Motive Gear master ring and pinion installation kits include everything that's in their regular differential kit—plus pinion shims, carrier shims, and ring gear bolts (where applicable). You also have the option of upgrading to higher quality bearings by adding "T" to the end of the part number on some models. Make a better choice for your ring and pinion installation with Motive Gear differential master bearing kits. Order the model designed for your vehicle application.

4.13 out of 5 stars ( 353 )

$99.99

—

$134.99

Richmond Gear Ring and Pinion Sets

Richmond Gear is the leading manufacturer of professional-quality, high performance ring and pinion sets. The superior quality of these gear sets is the result of years of racing development, outstanding design, and state-of-the-art manufacturing methods. Richmond also offers these gear sets in a lightened version for the weight-conscious enthusiast. Their lightened ring and pinion sets feature an outstanding rotating weight loss of up to 6 lbs., ground pinion threads for trouble-free installation, and a special heat treatment for improved strength.

4.54 out of 5 stars ( 317 )

$261.60

—

$435.99

Silver Sport 621 Manual Transmission Bellhousings

Silver Sport 621 manual transmission bellhousings are a good match for your street or trip transmission. Re-engineered by SST, these aluminum 621 GM reproductions feature CNC-machined, thick wall titanium-aluminum alloy construction for Chevy engines with 168-tooth flywheels.

1.0 out of 5 stars ( 1 )

$319.95

PRW Gold Series Flexplates

PRW Gold Series flexplates are engineered to handle extreme duty applications and designed to endure the punishment of modern high horsepower engines. The 4mm thick centerplate provides a solid foundation for these direct bolt-on drivetrain components. Ring gears are precision double-welded, utilizing robotic machinery and cold-welding processes for added durability. These flexplates are rigorously inspected throughout the manufacturing cycle to ensure you receive the expected quality. They are available in a wide variety of configurations to precisely match your application. Raise the bar on your high performance vehicle with PRW Gold Series flexplates. Order the style recommended for your specific vehicle and engine size. Features and specs: * Designed to fit standard OEM, aftermarket replacement, and high performance torque converters * SFI 29.1 certified * Forged one-piece steel ring gears * 0.035 in. thicker than stock flexplates * Constructed from cold-rolled chromoly steel * Long lasting yellow zinc plated finish

4.08 out of 5 stars ( 63 )

$94.99

—

$100.18