Replacement Hex Flange Head Cap Screw for Cummins ® ISX/QSX Applications OEM Cross References: 3678506

Product Details

1 x Cylinder Head Bolt

Model: Cummins ISX / QSX Engine

Details:

22 pcs Required Per Cylinder head, Screw, M18 x 1.5 x 170, Flanged Hex Head, 12.9, Class

OE Replacements: 040136, 3678506

Cross References:

Application & Fitment

• Engine Make: Cummins
• Engine Model / Application: ISX/QSX

Confirm the original part number and engine identification before ordering. Where applicable, also verify serial-number range, production year, piston style, bearing size or other configuration notes shown in the product information.

Part Numbers & Cross References

• OEM Cross Reference: 3678506
• Interstate-McBee Reference: M-3678506

Need Help Confirming Fitment?

Use the engine model, serial number and original part number when checking compatibility. For kits and sets, review the complete component breakdown above before ordering because contents can vary by engine configuration.