Choosing a clutch kit for commercial truck applications requires attention to component dimensions, drivetrain compatibility and installation quality. For Mercedes-Benz heavy-duty trucks, Mark Clutch 3400122801 is supplied as a matched clutch cover and driven disc set, helping buyers source the two main components under one part number. Its defined dimensions and OE reference provide a practical starting point for replacement-part verification.

3400122801: Key Specifications for Parts Matching

Before purchasing a replacement clutch, buyers should compare the original part number and physical specifications rather than relying on the vehicle brand alone.

The Mark Clutch 3400122801 is a single-plate diaphragm clutch kit designed for Mercedes-Benz heavy-duty truck applications. The cover measures Ø430 × Ø240 × 450 mm, while the disc specification is Ø430 × Ø240 hub × 18 teeth × Ø50.5 spline.

The cover uses a cast iron housing, and the disc features non-asbestos friction facing and a sprung hub. These details help workshops and distributors check whether the product corresponds to the original assembly.

When requesting a quotation, provide the original OEM number and, where available, the vehicle VIN, transmission details and photographs of the existing clutch. Confirm compatibility with the supplier before ordering.

Why Supply the Cover and Disc as a Matched Set?

Replacing clutch components individually can create additional work when the replacement parts are not correctly matched. Mark Clutch supplies 3400122801 as a paired cover and disc set, with the components pre-balanced together and assembled at the factory.

This arrangement gives buyers one part number to reference when purchasing the set. It can also simplify inventory management for distributors handling replacement parts for heavy-duty vehicles.

The kit uses a diaphragm-spring clutch cover and a sprung-hub driven disc. Buyers should still verify the complete specification against the original equipment, as similar dimensions alone do not guarantee compatibility.

Installation and Maintenance Considerations

Correct installation is essential to the service life of a replacement clutch.

Keep the matched set together. Install the supplied cover and disc as a pair. Avoid separating the set or mixing its components with existing parts unless compatibility has been confirmed.

Check the release bearing requirement. Bearing-equipped and bare-shaft configurations may have different part numbers. Specify the required arrangement and confirm the supplied contents before placing an order.

Centre the driven disc. Use a suitable alignment tool to keep the disc hub centred during installation. Incorrect alignment can prevent the transmission input shaft from engaging properly.

Inspect the flywheel. Check for hot spots, glazing and excessive runout. The product guidance identifies runout beyond 0.10 mm as a condition that can shorten clutch service life. Follow the vehicle manufacturer's workshop manual for the applicable inspection limits and repair procedure.

Follow the recommended break-in procedure. For the first 500 km, the supplied guidance recommends avoiding clutch riding, prolonged slipping on hills and high-load dragging in upper gears. Always follow the vehicle manufacturer's instructions for the specific truck.

Quality Control and Factory Supply

For commercial vehicle parts buyers, product consistency and manufacturing controls matter alongside specifications. Mark Clutch's manufacturing information identifies an IATF 16949-certified plant in Jiangxi, China, with in-house tooling, machining and assembly capabilities.

The factory states that each shipment receives dimensional and visual inspection, while batches undergo sampling for fatigue testing. Test reports are available on request. Its technical team also cross-checks customer OE numbers against the product catalogue before quotation.

Factory-direct supply can help buyers communicate their requirements directly to the manufacturer. For distributors and fleet maintenance teams, confirming the part number, specifications, order quantity and packaging requirements in advance helps make procurement more straightforward.

Applications and Order Information

The 3400122801 clutch kit is listed for Mercedes-Benz heavy-duty trucks. Its stated application includes heavy-duty commercial vehicle operations such as long-haul logistics, mining transportation, construction sites and port container shuttle.

The minimum order quantity is 50 pieces. Sample lead time is 3–7 days, while bulk orders generally require 15–30 days, depending on order quantity. Standard packing uses neutral cartons, with customised branding available on request. Payment terms are T/T with a 30% deposit and the balance before shipment. Shipping is available by sea, air or courier.

Frequently Asked Questions

Does 3400122801 fit every Mercedes-Benz truck?

No universal fitment should be assumed. Provide the original OE number and vehicle information so the technical team can verify the application before ordering.

Does the kit include a release bearing?

Bearing-equipped and bare-shaft configurations are available. Confirm the required configuration and supplied contents when requesting a quotation.

Can Mark Clutch support customised orders?

Custom branding is available on request. The factory also develops tooling from customer samples or drawings; discuss the required specifications with the team before confirming an order.

Request a Quotation for Clutch Kit 3400122801

Mark Clutch supplies matched clutch cover and disc sets for heavy-duty truck replacement applications. To enquire about 3400122801, send your original OE number, required quantity and available vehicle or component details for technical cross-checking.

Visit the product page or contact Mark Clutch to discuss your requirements.