AN -6 (6AN AN6) Bosch 044 / 910 Fuel Pump Outlet Check Valve In Billet Aluminium

Fits Bosch Fuel pumps ending in  044, 046, 053, 413, 909, 910, 911, 975, 979 (with M12x1.5 threaded outlets)

A check valve is required as after the engine is turned off the built up pressure left between the fuel pump and the fuel pressure regulator has to escape. The exit of least resistance is through the fuel pump if no check valve is fitted. The build-up of back pressure puts stress on the pumps internals damage the pump.


Manufactured using aluminium alloys that meet or exceed minimum requirements for aerospace hose fittings. Each component is precision-machined to exact tolerances for trouble-free performance.

A one way shuttle / spring type check valve. Often used as a one way breather valve on fuel tanks, allows air in without allowing anything to return.

Ideal for Bosch 044 fuel pump application

Suitable for Water, Fuel and Oil.

Opening pressure 0.5 PSI

Maximum pressure limit of  1500 P.S.I.
Internal Leakage: .01 cc/min. Max

It does not come with the fuel pump shown in the photo

Automotive / Aerospace-quality AN-6 to M12x.15 Black Anodised Billet Check Valve

Brand: Torques 
Type: Fuel Filter Item SKU code: TQCVB-6B

Fitting Finish: Black anodized 
Fitting Material: Aluminum 
Quantity: Sold individually.

Quick Overview

Item SKU code: TQCVB-6B

Check Valve, -6 AN to M12x1.5, Aluminum, Black, Each

Also Available in Blue and Red