Exhaust manifold illustration – not the actual part
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Exhaust manifold illustration – not the actual partDiesel Parts Direct logo

Aftermarket parts may appear slightly different, including the packaging.

Cummins4BT / 6BTExhaust Manifolds

Cummins 3943875 Exhaust Manifold For 6B And QSB Diesel Engines

(Long Section / Hi Silicon Moly)

Genuine Cummins Part

OEM #: 3943875SKU: 3943875
$767.36

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Special Order Item - not eligible for return

This is a Genuine Exhaust Manifold (Long Section/Hi Silicon Moly) for 6B and QSB Cummins engines.

SKU 3943875
OEM Number 3943875
Part Type Exhaust Manifolds
OEM Brand CUMMINS

Aftermarket warranty

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Genuine Cummins parts warranty

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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.

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