Replacement Exhaust Nut Lock for Caterpillar ® CAT General Use Applications 3400/3500 – ACERT – High Temperature OEM Cross References: 1687800

Application & Fitment

• Engine Make: Caterpillar

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: 1687800
• Interstate-McBee Reference: M-1687800

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.