Stanadyne Cam Pin / Advance Screw Roosa Master Injector Pump


Stanadyne Cam Pin / Advance Screw for Roosa Master

Stanadyne Part Number:  33627


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(Note: orders processed during our regular business hours, Mon-Fri. )

3 in stock


Stanadyne Cam Pin / Advance Screw for Roosa Master Diesel Injection Pumps

People attempting to repair their Stanadyne or Roosa injector pump themselves frequently break this cam pin trying to get it out.  This is especially true when the pump has never been a part before.  During manufacturing Stanadyne / Roosa Master put the cam screws in much tighter than they need to be, making them tricky to get out without damaging them.

Stanadyne Part Number:  33627

NOTE: We ship these in their OE packaging!  Stanadyne makes these here in the USA.  Thanks.

Fitment guide:

  • If it looks like the pin you are replacing, and your pump is a Stanadyne / Roosa Master, then this is probably what you need.  We are more than happy to give you a guarantee if contact us with your pump number so we can look up your pump specs.
  • There are about 3 different types of cam pin that this one replaces depending on what year the pump was made.
  • The oldest of these pins used a basic Allen wrench.  It was replaced by a 6 point that was not really a torx bit at all.
  • The last version of pin (the one we are selling here) takes an oddball version of a T45 torx bit. Stanadyne provides this bit to fuel shops such as ourselves (for an exorbitant price).  However, you can still get it in there without the tool, but it might take a bit of ingenuity.

If you need help verifying your application or need any help, reach out to us.  We are here to help!

You can call us, use our contact form, or even send us an email directly ([email protected])


Additional information



This product contains chemicals, or was manufactured with chemicals, that are known to the state of California to cause one or more of the following: cancer, reproductive harm, and birth defects. For more information, please see

Pump Manufacturer

Roosa Master Stanadyne


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