ALIGNMENT DOWELS

2013–2018 Ram 6.7L Cummins Alignment Dowels

Keep your 6.7L Cummins precisely located during assembly with high-quality alignment dowels. This subcategory includes cylinder head ring dowels, main bearing cap dowels, crankshaft gear alignment dowel pins, and adapter plate alignment hardware for accurate, repeatable builds.

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Related 13–18 Engine Categories

Engine Parts — 13–18 6.7L Cummins

Why CPP Diesel?

Correct, OE-spec fitment and dependable aftermarket options
Stocked items ship fast from our U.S. warehouse
Real diesel techs for build questions and support

Helpful Notes

Confirm dowel size and position (head, main cap, crank gear, adapter plate) against your ESN before ordering.
Always replace dowels during major service to maintain true alignment and prevent leaks or premature wear.
Pair with fresh gaskets, head studs/bolts, and torque-to-yield hardware for best results.

Frequently Asked Questions

What dowels are used on the 6.7L Cummins?

Common locations include cylinder head ring dowels, main bearing cap dowels, the crank gear alignment dowel, and adapter plate alignment points.

Are head and main cap dowels the same part?

Some ring dowels are used in multiple locations, but size and part number vary by application. Always verify by engine serial number.

Do I need new dowels when replacing a head gasket?

Yes—fresh dowels help ensure accurate head location and sealing during reassembly.

Can misaligned dowels cause timing or sealing issues?

Yes. Misalignment can lead to timing errors (crank gear) and sealing problems (head/block), so replace damaged or missing dowels.

Do you stock adapter plate hardware for 6.7L Cummins?

Yes—see our adapter plate listing above for 03–18 Ram applications.

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INTERSTATE-MCBEE M-3902343 CYLINDER HEAD ALIGNMENT DOWEL 89–18 5.9L / 6.7L CUMMINS (AFTERMARKET REPLACEMENT)

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INTERSTATE-MCBEE M-3900068 14MM MAIN BEARING CAP DOWEL 89-18 5.9L/6.7L CUMMINS (AFTERMARKET REPLACEMENT)

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CUMMINS 3949326 OEM RING DOWEL – FRONT GEAR HOUSING/CYLINDER BLOCK ALIGNMENT – ISB 5.9L/6.7L (2003–2018)

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CUMMINS 3900068 OEM RING DOWEL (14MM) – CYLINDER HEAD / MAIN BEARING CAP – 5.9L & 6.7L CUMMINS

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CUMMINS 3902343 OEM CYLINDER HEAD ALIGNMENT DOWEL (RING DOWEL) – 5.9L/6.7L CUMMINS (1989–2018)

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INTERSTATE-MCBEE M-3902343 CYLINDER HEAD ALIGNMENT DOWEL 89–18 5.9L / 6.7L CUMMINS (AFTERMARKET REPLACEMENT)
Interstate-McBee M-3902343 Cylinder Head Alignment Dowel — 1989–2018 5.9L / 6.7L Cummins OE-style cylinder head alignment dowel for Cummins B-Series engines. Centers and locates the cylinder head to the block during installation to ensure...

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INTERSTATE-MCBEE M-3900068 14MM MAIN BEARING CAP DOWEL 89-18 5.9L/6.7L CUMMINS (AFTERMARKET REPLACEMENT)
Interstate-McBee M-3900068 — 14 mm Main Bearing Cap Dowel — 1989–2018 5.9L / 6.7L Cummins (Aftermarket Replacement) Precision 14 mm alignment dowel for the main bearing cap on Cummins B-Series 5.9L (12V/24V) and 6.7L...

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CUMMINS 3949326 OEM RING DOWEL – FRONT GEAR HOUSING/CYLINDER BLOCK ALIGNMENT – ISB 5.9L/6.7L (2003–2018)
Genuine Cummins Cummins 3949326 — Ring Dowel (Alignment Pin) for Front Gear Housing / Cylinder Block MPN: 3949326 | Also Known As: ring dowel, dowel pin, alignment dowel | Use Case: Aligns front gear housing or...

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CUMMINS 3900068 OEM RING DOWEL (14MM) – CYLINDER HEAD / MAIN BEARING CAP – 5.9L & 6.7L CUMMINS
Genuine Cummins Cummins 3900068 — Ring Dowel, 14 mm (Cylinder Head / Main Bearing Cap Alignment) MPN: 3900068 | Also Known As: dowel ring, locating sleeve, ring dowel | Size: 14 mm | Cross-Refs:...

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CUMMINS 3902343 OEM CYLINDER HEAD ALIGNMENT DOWEL (RING DOWEL) – 5.9L/6.7L CUMMINS (1989–2018)
Cummins 3902343 — Genuine Cylinder Head Alignment Dowel (Ring Dowel) MPN: 3902343 | Also Known As: ring dowel, head alignment dowel | Position: Inserts in the engine block to locate the cylinder head The genuine Cummins...

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