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186 6178 Water Pump for Onan Military Generator MEP 802A MEP 803A Engine
$127.69
Sale price
$127.69
Regular price
Available to Order
This Water Pump is a replacement water pump compatible with Onan US Military Generators MEP-802A and MEP-803A and matches OEM Part# 186-6178.
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I needed a forklift part and wasn’t sure which one fit. They asked for the model and serial number, got back to me quickly, and made sure I ordered the right one. Really helpful.
Randy W. — Verified customer
Product Overview
This water pump is a critical cooling system component designed for Onan engines used in US military generators MEP-802A and MEP-803A. It circulates coolant to maintain optimal engine temperature during operation, ensuring reliable power generation. The pump meets OEM specifications and is a direct bolt-on replacement for the original part.
Key Features & Performance
- Direct replacement water pump for Onan engines in military generators
- OEM part number 186-6178 for exact specifications
- Constructed with high-quality materials for long service life
- Ensures proper coolant flow to prevent engine overheating
- Sealed bearing design reduces maintenance requirements
Fitment & Compatibility
- Onan engines used in US Military Generator MEP-802A
- Onan engines used in US Military Generator MEP-803A
Common Uses
- Replace worn or leaking water pump on military generator engines
- Rebuild or overhaul cooling system during generator maintenance
- Upgrade to a new pump when restoring surplus military generators
- Maintain reliable cooling during continuous or standby generator operation
Technical Specifications
- Part Number(s): 186-6178
- Application: Onan generator engine for MEP-802A and MEP-803A
- Type: Engine water pump
- Material: Cast iron / steel (typical)
Frequently Asked Questions
Q: Will this water pump fit other Onan generator models? A: This pump is specifically designed for the Onan engines in MEP-802A and MEP-803A generators; other models may require a different part number.
Q: Does the pump come with a gasket or installation hardware? A: The water pump is sold as a bare unit; we recommend ordering a new gasket separately for a proper seal during installation.
Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.