• This is the TESTING site!

    - These conversations will be wiped out when we move for real.

    - Please use the regular site https://fordsix.com for your 'real' communications!

    - Please post and poke around here for testing, just be aware that they will wiped out.

WTB exhaust manifold heat riser spring


New member

I am looking for the bi-metallic spring that controls the valve on the exhaust manifold.

I have a 1986 4.9 (300)

The valve is still free but the spring is shot.

The Ford part number is C5AZ9449A

Thanks .... Mike


New member
Sorry for the sloooooow delay.

Truck is up and running!

A cable might be a good idea ... or a solenoid to pull the riser when it hits temp.

Finding the spring would just make things easy.