Cummins 3966841 Water Pump For 6CT / 6CTA8.3 / C8.3 Engines

Product Overview:

This short‑nose water pump is designed for Cummins 6CT 8.3L series diesel engines within 220‑300HP power range. It delivers stable coolant circulation to prevent engine overheating under heavy‑duty land‑based operating conditions. Supplied as raw pump only, reuse original mounting gasket during installation. Strictly match shaft profile before ordering; cannot directly replace long‑nose water pump variants.

3966841 Water Pump Specification:

Key Features:

✔️Precision‑cast iron housing, excellent heat dissipation & structural stability for heavy workload

✔️Reinforced impeller & premium mechanical seal, reduce leakage risk, extend service life

✔️Factory‑matched dimensions, direct bolt‑on fit, no modification required for matched engines

✔️Optimized coolant flow performance, effectively control engine temperature for 220‑300HP 6CT series

Application:

Heavy‑duty trucks, passenger buses, wheel loaders, excavators (PC300‑7, PC360‑7), land‑based diesel generator sets, construction machinery.

Why Choose US?

✅Genuine‑quality Cummins replacement parts, fully verified part‑number supersession & compatibility

✅10+ years diesel spare‑parts expertise, professional cross‑reference support

✅Competitive factory‑direct prices for small & bulk orders

✅In‑stock for fast processing, global shipping supported

FAQ

Q: Can 3966841 replace 3800974 directly?
A: No. 3966841 is short‑nose type, 3800974 is long‑nose type. Shaft length and mounting structure differ, please check your old pump appearance before purchase.

Q: Does this item come with gasket?
A: No. This is raw pump assembly without gasket. Please reuse your original gasket or order separately.

Q: Is this water pump suitable for marine engines?
A: No. It is for land‑based engines only. Marine version uses dedicated part 3800975.