Replacement Thermostat for Cummins ® C/ISC/QSC/ISL/QSL Applications ISC/ISL – 180deg OEM Cross References: 5284903 Superseded/Alternate Numbers: M-3940632, M-4930594

Product Details

Thermostat – 180deg | Cummins Engine | M-5284903

Thermostat – 180deg is an OEM-quality component designed for the Cummins diesel engine. Manufactured to meet or exceed original specifications, this part ensures reliable performance and long service life. OE reference: M-5284903.

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Features:

• Direct-fit replacement for Cummins OE M-5284903
• Engineered for durability under high-load diesel conditions
• Ideal for rebuilds, maintenance, or performance upgrades

Order today from HeavyDutyKits.com ? your trusted source for heavy-duty diesel engine parts.

Application & Fitment

• Engine Make: Cummins
• Engine Model / Application: C/ISC/QSC/ISL/QSL

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: 5284903
• Alternate / Superseded: M-3940632, M-4930594
• Interstate-McBee Reference: M-5284903

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.