Find Drivetrain Replacement Parts
This product lineup encompasses a wide range of essential components and parts for maintaining and upgrading the drivetrain systems of these popular semi-truck models. From heavy-duty rear differential breather kits to specialized U-joint kits, this product lineup offers a comprehensive selection of high-quality replacement parts to keep your Freightliner Century running smoothly. Highlighted features and benefits of this product lineup include: - Durable and reliable drivetrain components designed to withstand the demands of commercial trucking - Comprehensive coverage for common maintenance and replacement needs, such as differential pinion nuts, seals, and locking nuts - Compatibility with a variety of Freightliner Century 112 and 120 models, ensuring a proper fit for your vehicle - Increased performance and efficiency through upgraded parts like stainless steel lift axles and differential pressure sensors - Convenient one-stop-shop for all your Freightliner Century drivetrain needs, saving you time and hassle Whether you're performing routine maintenance, completing a repair, or seeking to upgrade your Freightliner's drivetrain, this product lineup has the parts and accessories you need to keep your truck operating at its best. Invest in quality components to ensure your Freightliner Century 112/120 continues to deliver the reliable performance you expect from this trusted brand.Frequently Asked Questions About Freightliner Century 112/120 Drivetrain Parts
What model years are compatible with Century 112/120 drivetrain parts?
Most drivetrain components for the Freightliner Century 112/120 are compatible with models from 1996 to 2007. However, there are some variations between early models (1996-2003) and later models (2004-2007), particularly in transmission mounting brackets and driveshaft lengths. Always verify your specific OEM and model year when ordering clutches, U-joints, or transmission components to ensure proper fitment.
What are the most common drivetrain failures I should watch for?
The most frequent issues include clutch slippage (typically occurring between 250,000-400,000 miles), U-joint wear causing vibrations, and carrier bearing failures on two-piece driveshafts. Input shaft seal leaks on manual transmissions are also common after 300,000 miles. Regular inspection of these components during oil changes can help catch problems early and prevent roadside breakdowns.
Can I upgrade from a single to a dual disc clutch system?
Yes, upgrading from a single to dual disc clutch is possible on most Century 112/120 models, but it requires matching components. You'll need a compatible flywheel, clutch assembly, and potentially a different bellhousing depending on your transmission model. For trucks with Eaton Fuller 10-speed transmissions, this upgrade typically adds about 40% more torque capacity. Professional installation is recommended as improper alignment can cause premature wear.
What tools and equipment do I need for DIY drivetrain maintenance?
Basic drivetrain maintenance requires a transmission jack (minimum 1,000 lb capacity), clutch alignment tool specific to your spline count, torque wrench capable of 150+ ft-lbs, and a dial indicator for checking runout. For driveshaft work, you'll need snap ring pliers and a U-joint press. Many drivers find that investing in quality tools pays off quickly given shop labor rates of $150-200 per hour.
How do I identify the correct replacement U-joints and carrier bearings?
U-joint sizing on Century 112/120 models typically uses either 1710 or 1810 series, with the series number stamped on the U-joint cross. Measure the cap diameter and width to confirm - 1710 series measures 1.625" cap diameter while 1810 measures 2.125". For carrier bearings, check the bearing race for part numbers or measure the inside diameter (typically 2.5" or 3") and width. When in doubt, bring your old parts to match them exactly, as using incorrect sizes can cause dangerous driveline vibrations.
