Replacement Rocker Housing Cover Gasket for Cummins ® B/ISB/QSB Applications ISB OEM Cross References: 3963379 Superseded/Alternate Numbers: M-3955109

Product Details

1 x?Rocker Lever Housing Gasket – 3963379

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Fits?Application:?Cummins ISB / QSB Series

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Details:

Rocker Housing Gasket
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OE Replacements:?131692,?3963379,?3955109

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Cross References:

Application & Fitment

• Engine Make: Cummins
• Engine Model / Application: B/ISB/QSB

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: 3963379
• Alternate / Superseded: M-3955109
• Interstate-McBee Reference: M-3963379

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.