Cummins 3900631 Hexagon Flange Head Cap Screw
Cummins 3900631 Hexagon Flange Head Cap Screw - view 2
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Cummins 3900631 Hexagon Flange Head Cap ScrewCummins 3900631 Hexagon Flange Head Cap Screw - view 2Diesel Parts Direct logo

Aftermarket parts may appear slightly different, including the packaging.

Cummins4BT / 6BTCylinder Heads

Cummins 3900631 Hexagon Flange Head Cap Screw

Compatible With B5.9-M210, ISC, B5.9M, 6B5.9, and 4B3.9 Engines

Genuine Cummins Part

OEM #: 3900631SKU: 3900631

Ships in 4-5 days

$3.72

Taxes and Shipping are calculated at checkout

Return with 20% Fee

This is a genuine Cummins Hexagon Flange Head Cap Screw for B5.9-M210, ISC, B5.9M, 6B5.9 and 4B3.9 engines.

SKU 3900631
OEM Number 3900631
Part Type Cylinder Heads
OEM Brand CUMMINS

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
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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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