Part Number: 9-0457DP7

Perko 0457DP7 Flush Pro Engine Flushing Kit
Keep your engine cooling system clean and protected with the Perko 0457DP7 Flush Pro. Designed as a complete inline freshwater flushing kit, this system makes it easy to flush salt, sand, silt, and debris from your engine after every outing, helping reduce corrosion and extend engine life.
The Flush Pro installs directly into the raw water intake line and allows you to flush your engine simply by connecting a standard garden hose. Its transparent housing lets you visually monitor water flow during operation, while the built-in check valve automatically shuts off the hull intake when water pressure is applied. This allows freshwater to circulate through the cooling system safely and efficiently without disconnecting hoses or running the boat out of the water.
The 0457DP7 kit also simplifies winterization by allowing antifreeze to be drawn directly into the cooling system through the Flush Pro assembly. Built with durable marine-grade materials and a stainless steel spring, it’s engineered for long-term reliability in both freshwater and saltwater environments.
Common Engine Fitments
The Perko 0457DP7 Flush Pro is commonly used on inboard and sterndrive engines equipped with 1-1/4" raw water cooling hoses, including:
- Indmar Monsoon 325 and Monsoon 340
- Indmar Assault 5.7L
- Indmar Raptor 400 and Raptor 440
- PCM Excalibur and PCM ZR Series engines
- Ilmor MV8 5.7L, 6.0L, and 6.2L engines
- MerCruiser 5.7L, 6.2L MPI, and 8.2 MAG engines
- Crusader V8 marine engines
- Volvo Penta V6 and V8 sterndrive applications
These engines are commonly found in:
- Supra wake and surf boats
- Moomba wake boats
- MasterCraft towboats
- Malibu and Axis boats
- Nautique ski and surf boats
- Sea Ray cruisers and sport boats
Fitment depends on hose diameter and cooling system configuration, so confirming compatibility with the 0457DP7 kit before ordering is recommended.
Key Features
- Complete inline freshwater engine flushing kit
- Designed for 1-1/4" raw water hose systems
- Transparent housing for easy water flow inspection
- Automatic check valve system for seamless operation
- Helps remove salt, sand, and debris from cooling passages
- Simplifies engine winterization
- Durable marine-grade construction with stainless steel spring
Why Install a Flush Pro?
Routine freshwater flushing helps reduce internal corrosion, improve cooling system efficiency, and protect expensive engine components from premature wear. The Perko Flush Pro makes post-trip maintenance fast and convenient, especially for boats used in saltwater or brackish water conditions.
If you want a simple and effective way to maintain your marine cooling system, the Perko 0457DP7 Flush Pro delivers dependable performance trusted across a wide range of inboard and sterndrive applications.