Upgrade Piston Pin Compatible with SPEED 19XZ-B - O.S. Engine OS21956000  [OS21956000]

O.S. ENGINES PISTON PIN SPEED 19XZ-B
Price:
AUD$8.16
Brand:
O.S. Engine
Model:
OS21956000
GTIN:
4531028148338
Condition:
Brand New
Write a review

Role of the piston pin in engine operation

This component, catalogued as O.S. Engine OS21956000, is an aftermarket piston pin intended for SPEED 19XZ-B engine assemblies. It secures the piston to the connecting rod and functions as a standard service replacement during rebuilds and repairs.

Perform pin installation as part of top-end servicing: disassemble the head and piston per the engine maker's instructions, inspect the piston and rod for wear, then press the pin through the piston and rod using a suitable arbor or light press. Refrain from hammering the pin and ensure circlip retainers are properly seated after assembly.

For tuning and lasting performance, maintain immaculate mating surfaces and correct retainer seating instead of altering pin geometry. Apply light lubricant at assembly and observe operation during early runs to detect any signs of misalignment or premature wear.

Will changing the pin affect engine balance?

A correct replacement pin preserves the original balance if dimensions match. Always compare weight and fit to the original and follow the service manual for balancing procedures.

Any tuning considerations after pin replacement?

After installing the pin, run a cautious break-in and monitor for unusual vibration. Proper seating and lubrication reduce the chance of erratic tuning behavior caused by mechanical wear.

Best practice to check fit during rebuild?

Confirm the pin slides smoothly in the piston and rod and that circlips are flush. Any binding or play indicates a problem and should be addressed before running the engine.

Copyright © 2008-2026 rcjaz.com.au All rights reserved