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Aftermarket parts may appear slightly different, including the packaging.

Cummins4BT / 6BTBelt Tensioners

Cummins 5270678 Belt Tensioner

Compatible With 4B3.9, B4.5, 6B5.9, B6.7, ISB, and QSB Engines

Genuine Cummins Part

OEM #: 5270678SKU: 5270678
$302.19

Taxes and Shipping are calculated at checkout

Special Order Item - not eligible for return

SKU 5270678
OEM Number 5270678
Part Type Belts, Tensioners
OEM Brand CUMMINS

Aftermarket warranty

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Genuine Cummins parts warranty

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  • Orders are processed the same or next business day
  • Expedited shipping options available at Checkout
  • If same-day shipping is critical, please call to confirm availability

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Call any of our friendly Parts Dept. Specialists with your engine serial number, and we can quickly verify whether this part is the correct part for your engine — no guesswork.

Phone: 888.687.0539

Don't know how to find your engine serial number? Go to our Engine Help Center for assistance.