Freightliner / Cummins / Caterpillar Belt Tensioner

OE 3400885 / 2TB903150 / 961003410014 / D11862549

Aftermarket replacement for B2B importers, distributors, wholesalers and private-label programs.

Product category: Belt Tensioners
Brand application: Cummins / Freightliner / Caterpillar
OE references: 3400885 / 2TB903150 / 961003410014 / D11862549
Application: Freightliner / Cummins / Caterpillar

Confirm final specification and application before ordering.

PRODUCT OVERVIEW

ABOUT THIS BELT TENSIONER.

The TRUPA Freightliner / Cummins / Caterpillar Belt Tensioner is an aftermarket replacement belt tensioner referenced to OE numbers 3400885, 2TB903150, 961003410014, D11862549. It is listed for Freightliner / Cummins / Caterpillar. TRUPA supplies it to importers, distributors, wholesalers and private-label programs, with China export supply and partner-warehouse support in the USA and Brazil for eligible orders.

WHAT IT DOES

A belt tensioner keeps the correct tension on the accessory (serpentine) belt that drives the alternator, water pump, fan and air-conditioning compressor. It uses a spring-loaded arm and an idler pulley to absorb belt stretch and vibration.

APPLICATION & FITMENT

Listed for Freightliner / Cummins / Caterpillar. More parts for Cummins, Freightliner, Caterpillar.

OE & INTERCHANGE NUMBERS

3400885
2TB903150
961003410014
D11862549

BEFORE YOU ORDER

OE and cross-reference numbers (for example Gates, Dayco or Continental)
Engine and truck model, as some tensioners are shared across brands
Pulley type (grooved or flat), diameter and arm direction

COMMON REPLACEMENT SIGNS

Belt squeal, slipping or chirping
Tensioner arm vibrating or bouncing at idle
Noisy or rough idler pulley bearing
Premature belt wear or the belt jumping off the pulleys

Read the troubleshooting guide →

QUALITY CHECKS

Spring torque, pulley bearing quality and arm pivot wear decide service life, so these are checked against the original part. How TRUPA approaches quality control.

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