Fits Cummins 4B3.9 6B5.9 ISBE CM800 QSB6.7 CM850 QSF2.8 - Belt Tensioner 3937556 3911621

Introducing the perfect belt tensioner for your Cummins engine, part number 3937556. This belt tensioner is specifically designed to fit a range of Cummins models including 4B3.9, 6B5.9, B GAS INTERNATIONAL CM556, B4.5, B4.5 RGT, B4.5S, B5.9 G, B5.9 GAS PLUS CM556, B5.9 LPG, B5.9 LPG PLUS CM556, B6.7 G CMOH6.0 B125, B6.7S, F3.8 F102, G3.9, G5.9, G5.9 CM558, ISB (CHRYSLER), ISB CM2150, ISB CM550, ISB CM850, ISB/ISD4.5 CM2150 B119, ISB/ISD4.5 CM2150 SN, ISB/ISD6.7 CM2150 B120, ISB/ISD6.7 CM2150 SN, ISB/ISD6.7 CM2880 B126, ISB3.9 CM2220 B107, ISB4.5 CM2150, ISB5.9G CM2180, ISB6.7 2010 DCX PICKUP, ISB6.7 2013 DCX CHASSIS CAB, ISB6.7 CM2150 SQ, ISB6.7 CM2250, ISB6.7 CM2350 B101, ISB6.7 CM2350 B103, ISB6.7 G CM2180 B118, ISBE CM2150, ISBE CM800, ISBE2/ISBE3 CM850, ISBE4 CM850, ISD4.5 CM2150, ISF2.8 CM2220, ISF2.8 CM2220 AN, ISF2.8 CM2220 EC, ISF2.8 CM2220 ECF2, ISF2.8 CM2220 F101, ISF2.8 CM2220 F117, ISF2.8 CM2220 F126, ISF2.8 CM2220 IAN, ISF3.8 CM2220, ISF3.8 CM2220 AN, ISF3.8 CM2220 F103, ISF3.8 CM2220 F110, ISF3.8 CM2220 F116, ISF3.8 CM2220 IAN, ISF3.8 CM2350 F109, ISG11 CM2880 G106, ISG11 CM2880 G108, ISG12 CM2880 G107, ISG12 CM2880 G109, ISG12 G CMOH6.0 G111, QSB3.9 30 CM550, QSB4.5 30 CM550, QSB4.5 CM2150 B108, QSB4.5 CM2250 B131, QSB4.5 CM2250 EC, QSB4.5 CM2350 B106, QSB4.5 CM2350 B122, QSB4.5 CM850, QSB5.9 30 CM550, QSB5.9 44 CM550, and more.

Made from high-quality materials, this belt tensioner is designed to withstand the rigors of a tough working environment and will keep your belts in perfect working order. The tensioner is designed to work with your existing belts, ensuring a perfect fit for maximum functionality.

The belt tensioner features an easy-to-use design for quick and painless installation. It is built to exact OEM standards and specifications to ensure that it will operate flawlessly when installed correctly. With an application that spans multiple models, you'll never have to worry about finding another belt tensioner for your Cummins engine again.

The part number for this product is 3911621, so you can be sure that you are getting a genuine Cummins part with all of the quality and reliability that is synonymous with the brand. Don't settle for less when it comes to your engine parts; trust the experts at Cummins.

In conclusion, if you are looking for a reliable and easy-to-install belt tensioner for your Cummins engine, look no further than the 3937556! With a broad range of applications and built with the highest quality in mind, you can be sure that this belt tensioner will keep your engine running smoothly for many years to come. Trust the experts at Cummins and choose this belt tensioner for unparalleled performance and reliability.