2008 JEEP 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 ( 513 )

$642.99

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$707.99

Spicer Drivetrain Products Axle Shafts

Spicer Drivetrain Products axle shafts are manufactured to the same high standards as factory parts because they are original equipment. That means when an automotive axle is replaced with a genuine Spicer part, you're getting the same performance and reliability as when the vehicle rolled off the assembly line. Dana is constantly revolutionizing the technology behind its Dana axles and Spicer products—so the replacement axle shaft you purchase today may even exceed the standards set for the original equipment part you're replacing. Order the model designed to fit your application.

4.78 out of 5 stars ( 90 )

$153.99

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$337.99

RCV Ultimate CV Axles

RCV Performance Ultimate CV axles simply replace your weak axle shafts with a high-strength design. Tests prove they are twice as strong as OEM shafts, and they're just as tough at a straight angle as they are at extreme angles. Even if you have big tires and big power, there are no worries. Ultimate CV axles are low maintenance and operate with a smoothness you can feel--whether off-road or on the street. And they back it all with a "No Questions Asked" limited lifetime warranty. Available for many vehicles, select the RCV Ultimate axle set designed for truck, SUV, or Jeep.

4.75 out of 5 stars ( 4 )

$1,399.95

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$1,449.95

Spicer Drivetrain Products Differential Cover Kits

Rust, rocks, and road debris all take part in destroying differential covers—so Spicer Drivetrain Products introduces a line of axle-specific replacements. These kits include a new cover, plug, and installation bolts for an all-new look. They're available in a variety of materials and finishes for high strength and good looks. The differential covers are offered for the front or rear with select options for your particular application.

4.79 out of 5 stars ( 106 )

$150.99

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$222.99

BD Diesel Transmission Pans

These BD Diesel transmission pans offer additional oil capacity to keep your hard-working transmission at the proper temperature. They are made from tough cast aluminum to prevent flexing under high-torque loads and come in a high-gloss, powdercoated finish that helps keep the contained oil cool.

5.0 out of 5 stars ( 11 )

$363.95

Crown Automotive Direct-Fit Axle Shaft Assemblies

If it weren't for axles, the wheels on your vehicle wouldn't be moving anywhere. When those all-important parts twist, break, or have other difficulties, simply replace them with Crown Automotive direct-fit axle shaft assemblies. These assemblies are available for numerous axle types, such as CV-style, C-clip, front inner and outer, and bolt-in. While some replacement axles use hardened 4340 chromoly shafts, most are designed and steel-built to OEM specs for reliability and fitment. Each axle is engineered for its particular location and differential. Crown direct-fit assemblies cover many models of vehicles.

4.46 out of 5 stars ( 97 )

$84.99

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$239.99

On Sale

B&M Automatic Transmission Deep Pans

B&M automatic transmission deep pans provide additional fluid capacity and cooling ability. No modifications to the dipstick are needed. They include a drain plug for clean and easy fluid changes, and are available in chrome or cast aluminum. Filter extensions are included for those applications that require the filter to be moved closer to the bottom of the pan.

4.59 out of 5 stars ( 368 )

$299.95

B&M Jeep Precision Sport Shifters

B&M Racing introduces the Precision SportShifter for 2007-18 Jeep Wrangler JK models equipped with the NSG370 6-speed manual transmission. The unit features a CNC billet aluminum case with an electric blue anodized finish which houses internal components made from super tough 4140 chromoly. The shift throw has been reduced by 35 percent over the factory shifter along with the detent pressure which has been significantly increased creating a noticeably stiffer shift feel. This was done to address problems with the softness of the factory shifter detent springs which easily pop out of gear while off-roading. The shifter uses the factory shift stick and knob.

4.67 out of 5 stars ( 12 )

$749.95

Yukon Gear & Axle Bearings

Yukon Gear & Axle axle bearings are made from top-quality materials to original specs, so you can be sure that you're getting a quality product. These replacements are available for a variety of axle model applications, from the 1950s and up.

4.53 out of 5 stars ( 77 )

$44.89

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$156.99

Spicer Drivetrain Products Differential Carriers

What kind of hidden performance does your vehicle possess that's ready to be unleashed? Spicer Drivetrain Products differential carriers supply the power for you to find out! You can increase your off-road traction, maintain streetability, and get ready to rock and roll in your truck or Jeep with the selection of carriers offered by this legendary manufacturer. Spicer goes above and beyond so your rig can do the same! Order the model and options recommended for your vehicle.

4.9 out of 5 stars ( 20 )

$1,058.99

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$1,555.99

Centerforce II Clutch Kits

Centerforce II clutch kits provide up to a 60 percent increase in holding capacity over stock systems. Their clutch-and-disc sets are recommended for mildly modified vehicles used for street and strip type applications. These units are also very capable for 4WD and off-road use, heavy-duty towing, and commercial applications.

4.6 out of 5 stars ( 50 )

$524.95

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$1,060.95

Eaton Electronic ELocker Differentials

Eaton electronic ELocker differentials offer you the best of both worlds. Imagine having the comfort and convenience of an open differential for around town—and the powerful traction of a full-on locker when it's necessary. This is exactly what the Eaton ELockers provide. With the push of a dash-mounted button, you decide when the differential should be fully locked for maximum traction to both wheels, or free to differentiate for the best fuel mileage and tire tread life. Whether you're running a 2WD or 4WD, open or locked, the Eaton ELockers put the driver in total control! Order the carrier designed for your axle model.

4.0 out of 5 stars ( 12 )

$1,449.99

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$1,579.99

USA Standard Gear Spartan Lockers

Spartan lockers are affordable, reliable traction. These USA Standard Gear Spartan lockers are mechanical lockers that fit into a standard differential carrier, replacing the open spider gears. They do not use thrust washers and have a revolutionary spring and pin design to make installation a snap! Spartan lockers feature high-nickel 9310 chromoly drivers and couplers for added strength. Give your vehicle great traction and save some cash. Drop in Spartan lockers for improved traction. They're available for a variety of makes and models spanning more than a half-century.

4.28 out of 5 stars ( 32 )

$255.00

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$733.99

Timken Pinion Bearings

Timken pinion bearings offer durability and peace of mind. Known the world over, Timken bearings are precision-engineered to provide you with superior quality, along with energy-efficient and cost-effective friction management. For a proper fit that will run smoothly, these single-row tapered roller bearings are your best bet when replacing old and worn pinion bearings. Timken bearings are available for dozens of axle types; choose the models that match your vehicle specs.

4.83 out of 5 stars ( 60 )

$22.99

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$26.99

ARB Air Locker Differentials

A 4x4 and traction go hand-in-hand; however, standard (open) differentials allow each wheel to turn independently to eliminate binding in turns. Off-road, this becomes a problem as engine power takes the path of least resistance—to the wheel with little or no traction. Limited slip differentials offer some improvement, but too often the slipping is not "limited" enough to maintain forward progress. Automatic locking differentials also have disadvantages; noisy when disengaging, they can also upset on-highway driving characteristics. Created to provide traction on demand, without sacrificing highway driving performance, ARB Air Locker differentials employ a 12 V ARB air compressor (sold separately) to pneumatically operate a solid and durable locking mechanism inside the differential. When activated, the Air Locker prevents the differential gears from rotating and the axle shafts from turning independently of each other. With both wheels tied directly to the rotation of the ring gear, the vehicle maintains maximum possible traction at all times. When unlocked, it operates just like a conventional open differential. ARB Air Lockers are available in over 100 configurations for a wide range of vehicles and can be installed in both front and rear axles. Installation should be performed by a qualified differential technician, although no special tools or skills are required, apart from those necessary for fitting a standard differential. ARB also offers three compressor models suitable for Air Locker operation, two of which can be used to inflate tires and operate other equipment. Additional features of ARB Air Lockers include: * Vastly improved traction means less reliance on momentum, reducing the likelihood of vehicle damage * Easy, convenient operation without leaving the comfort and safety of the driver's seat * Ultra durable and extremely strong; only the highest quality materials used in construction * Patented gear technology and 2-piece design ensures optimal locking strength * Forged gears provide superior strength and durability * Incredibly simple, yet effective, design employs minimal moving parts for maximum reliability * Thoroughly tested and proven * Most sold as kits with differential, activation switch, solenoid valve, air line, and bulkhead fittings * Front and rear Air Lockers available for most makes and models * For 4WD and 2WD applications * Easy maintenance; no special additives required * Also offered in ARB Traction Packs that include two Air Lockers, a compressor, and accessories for tire inflation

4.73 out of 5 stars ( 11 )

$1,299.95

Timken Differential Bearings

Make sure that the job is done right with Timken differential carrier bearings. You can trust Timken to supply you with bearings manufactured with technology-driven processes to the most stringent of thresholds and manufacturing tolerances. Look to Timken's differential bearings to provide you with the confidence that you need when completing your ring and pinion installations.

4.36 out of 5 stars ( 50 )

$17.99

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$39.99

Yukon Gear & Axle C-Clips

Yukon Gear & Axle C-clips keep a secure hold on your axle. These little steel C-clips are mighty important, so they're precision-crafted to stay in the groove and prevent your shaft from sliding out. The replacement clips are available for fitment on more than a dozen axle models. Trust Yukon C-clips for differential maintenance.

4.92 out of 5 stars ( 48 )

$11.89

Yukon Gear & Axle Differential Covers

Yukon Gear & Axle offers a full line of differential covers to suit your front or rear applications. These replacement covers protect your gears, keep lubricating fluid where it's needed—and on some styles, they offer added cooling and/or strength. Their large selection affords you options of materials, sizes, and finishes to get exactly what you need. Order the model recommended for your axle, differential case design, and engine specifications.

4.04 out of 5 stars ( 72 )

$40.99

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$218.99

Instant Rebate

TeraFlex Jeep JK Wrangler Rzeppa High-Angle Factory Replacement CV Joints

TeraFlex JK Wrangler Rzeppa high-angle factory replacement CV joints replace your worn or damaged factory units without needing to purchase expensive aftermarket U-joint upgrades. These high-angle models reduce boot failure common with 3 in. or higher lifts. TeraFlex includes low-friction grease engineered specifically for the high-rpm needs of the Rzeppa CV joint and features high-viscosity surface bonding characteristics necessary to properly adhere the grease to all moving surfaces. TeraFlex Rzeppa high-angle CV joint kits include: * CV joint assembly * High-angle CV housing cap and boot * Bolt flanges * Socket head bolts * 6mm Allen wrench * Low-friction CV grease

4.63 out of 5 stars ( 16 )

$184.99

Yukon Gear & Axle Ring and Pinion Gear and Installation Kit Combos

Yukon Gear & Axle ring and pinion gear and installation kit combos are complete packages that include front, rear, or front and rear ring and pinion sets, along with the most complete master overhaul kits on the market—giving you everything needed to re-gear the front and/or rear differentials in one package. Conceived to handle some of the harshest conditions, these combos utilize the latest design and manufacturing technologies to afford you quiet running gear that's strong and easy to set up. The included Yukon master rebuild kits undergo extensive research to ensure a perfect fit and hassle-free install with the very best components. Order the combo designed to fit your application.

4.5 out of 5 stars ( 14 )

$612.99

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$1,031.99

Summit Racing™ Positraction Differential Carriers

Summit Racing™ Positraction differential carriers deliver aggressive, yet smooth, controllable traction. Our carriers feature nodular iron cases, forged steel internals, strong teeth—and they're fully rebuildable. We offer fitments for dozens of axle models. Whether replacing or upgrading, Summit Racing™ Positraction differential carriers will put power to the pavement, providing the confidence and performance you need.

4.48 out of 5 stars ( 50 )

$645.99

TransGo Overdrive Pressure Plates

TransGo's fully CNC-machined overdrive pressure plates will allow you to quickly and easily add extra capacity to the overdrive clutch pack. The pressure plates are a direct fit for the OEM drum. Consequently, there is no need for you to spend a small fortune on an aftermarket drum. When using this TransGo pressure plate, you can add two overdrive fricitions for single-sided application and one overdrive friction for double-sided application. For the single-sided friction setup, like in the 68RFE, the new stack up yields a 15 percent increase in surface area. Alternatively, for double-sided friction setup, like in the 545RFE, the end result is a 25 percent increase in surface area. For performance shift options you want, without sacrificing durability, choose TransGo overdrive pressure plates.

Not Yet Reviewed

$121.00

Spicer Drivetrain Products Ring and Pinion Gears

Unleash the performance in your vehicle with Spicer Drivetrain Products ring and pinion gears! They're engineered to meet the specific original equipment standards of Dana axles, delivering a perfect fit with less noise, vibration, and harshness. All Spicer ring and pinions are built to the latest Dana designs—which include premium heat-treat processes and optimal tooth profiles, plus high-grade steel to achieve maximum durability. Even in the most demanding conditions, Spicer ring and pinion gears provide quality and unparalleled performance to genuine Dana axles. Order the set designed for your specific axle model application.

4.21 out of 5 stars ( 14 )

$287.99

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$829.99

Crown Automotive Axle Bearings

Crown Automotive offers a wide selection of axle bearings to meet your application needs. They have bearings for the front and rear that will keep your axles spinning without resistance. Whether you need just a bearing or a complete bearing and seal kit, Crown Automotive has the quality choices to get your project revolving.

4.61 out of 5 stars ( 33 )

$11.99

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$61.99