PMO Short Ball Pin | PMO Carburetors, Air-Cooled Porsche 911 / 930 1965–1989 | Genuine PMO (PM-O129-5)
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PMO Short Ball Pin for PMO Carburetors — Air-Cooled Porsche 911 (PM-O129-5)
Short answer: The PMO Short Ball Pin (PM-O129-5) is a genuine PMO carburetor service part listed in PMO's accelerator pump parts group (PM-O129 series). It fits PMO triple-barrel carburetors as used on the air-cooled 1965–1989 Porsche 911 and 930. Sold each.
Part numbers: PMO PM-O129-5 · UPC 707924556568
Fitment
| Years | Vehicle | Notes |
|---|---|---|
| 1965–1989 | Porsche 911 / 930 (air-cooled flat-six) running PMO carburetors | PMO 40, 46 and 50 mm carburetors |
| 1965–1989 | Porsche 911 with original Weber IDA / IDS or Solex carburetors | Not confirmed; PMO parts are made for PMO bodies |
| 1989–1998 | 964 / 993 converted to PMO carburetors | Fits the PMO carburetor, not the car; check your carb |
| Any | Porsche 912, 914 four-cylinder, VW | Not applicable unless running PMO carburetors |
This part fits the PMO carburetor, not a particular car. If your 911 runs a set of PMO carbs, it fits. Not sure what you have? PMO bodies carry the PMO name cast or machined into them; send us a photo and we will check.
Specifications
| Spec | Detail |
|---|---|
| Manufacturer | PMO (Performance Machined Originals), US distributor EMPI |
| Part number | PM-O129-5 |
| UPC | 707924556568 |
| Type | Ball pin, short |
| Parts group | PMO accelerator pump (PM-O129 series) |
| Fits | PMO 40 / 46 / 50 mm carburetors |
| Shipping weight | Approx. 0.1 lb (estimate) |
| Box | Approx. 4 x 4 x 1 in (estimate) |
| Condition | New |
What's Included
- One short ball pin
Not Included
- Accelerator pump diaphragm assembly PM-O129-0
- Linkage rods and clips
Why It Matters
Ball pins are the pivot points in carburetor linkage. When the ball wears oval or the pin bends, the linkage gets sloppy: the pump stroke shortens, you feel a stumble off idle, and throttle response gets vague. A new pin takes the slop out.
PMO (Performance Machined Originals) builds billet triple-barrel carburetors in the US for the air-cooled Porsche 911 flat-six, in 40, 46 and 50 mm sizes, and supplies every small part as a service item. EMPI distributes PMO. Washburn's Metal in Orange, California lists PMO small parts one by one so you can buy the single piece you lost or damaged instead of a whole kit.
Installation Notes
- Note which hole the old pin was in before removing it.
- Thread the pin in by hand, then snug it; do not over-tighten.
- Put a drop of light oil on the ball and check the linkage moves freely through its full travel.
- Work on a cold engine with the fuel pump off and a fire extinguisher close by.
- Clean the area around the part before opening the carburetor so dirt cannot fall into the float bowl or throats.
- After any work, check the throttle opens fully and closes with no sticking, and check for fuel leaks before starting.
- Re-balance the carburetors with a synchrometer if you disturbed any linkage or air cleaner parts.
Frequently Asked Questions
Does the Short Ball Pin fit my 911?
It fits the air-cooled Porsche 911 or 930 when the car runs PMO carburetors. It is a PMO carb part, so the carb matters more than the year.
Will it fit original Weber carburetors?
Not confirmed. PMO parts are made for PMO bodies; some are shared with Weber, but check before you order.
Is it genuine PMO?
Yes, PMO part PM-O129-5, distributed in the US by EMPI.
Is it new?
Yes, new genuine PMO.
Is this short or long?
Short. Compare with your old pin to be sure you have the right length.
Where does it go?
PMO lists it with the accelerator pump parts; it is a pivot for the linkage.
What else do I need?
Check the matching socket or rod end for wear too.
Explore Related Categories
PMO Carburetors & Induction | Porsche Carburetion & Induction | Porsche 911 / 912 Parts | Fuel & Intake Components
Porsche® and Volkswagen® model designations are trademarks of their owners. Washburn's Metal is not affiliated with or endorsed by Porsche or Volkswagen. Part numbers are for reference only.
⚠ California Proposition 65 Warning: This product can expose you to chemicals including lead, known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
