21611CC000 Nissan VALVE-BYPASS, Price: 234.16$, Weight: 0.25kg


Make Number Name Availability Weight, kg Ship in, Days Price

Nissan

21611CC000

VALVE-BYPASS

0

0.25

2-3

234.16$

Not Available

Compatibility

Body StyleEngineVehicle GradeMarketModelModel Year FromModel Year ToDiagram
WAGONVQ35DESEGeneral/Asia (RHD)Z5008.200512.2008 View

Engine Coolant Bypass Valve

This valve is a small but vital part of the cooling circuit. It is needed to control how coolant flows around the engine during warm-up and temperature changes, helping the motor reach the correct operating heat faster and stay stable in traffic or on long drives ?️.

How It Works

The valve opens and closes to route coolant through a bypass path or toward the radiator, depending on pressure and temperature conditions. By managing this shortcut flow, it reduces hot spots, supports steady heater performance, and helps protect gaskets and seals from sudden thermal stress.

What Happens If It Fails

If the valve sticks open, the engine may take longer to warm up, fuel economy can drop, and cabin heat may feel weak. If it sticks closed or leaks internally, coolant circulation can become uneven, leading to overheating, erratic temperature gauge movement, or coolant loss. Ignoring a bad bypass valve can result in warped components and costly engine repairs ⚠️.

Why Replace It On Time

A fresh valve restores proper coolant routing, improves temperature control, and keeps your cooling system working as designed for reliable daily driving.

Compatibility

  • L300