Used on all K&B 3.5 engines

Check your cylinder before ordering -- Here are the differences

The early 3.5 which used a small sleeve with an outside diameter of .750
This means the hole in the crankcase where the sleeve slides in is 3/4" diameter.
This is only part number 33-8904

Later crankcases used a .765 diameter sleeve. This is .015" larger
We have 3 versions of this sleeve

33-8901 Used on all outboards and front intake engines.
Including early inboards. This has standard exhaust timing.

33-8902 Used on ducted fan and marine engines.
This has higher exhaust port timing. Performs well with tuned pipes.

10-8903 Same as 33-8902 except it has snap ring grooves for cir-clips to hold the wrist pin in place. All others use teflon pads to keep wrist pin in place. NOTE: Teflon pads may be used on this piston/liner set and the grooves will just be unused. None of the other piston/cylinder sets have grooves to acomadate cir-clips.

Items usually purchased with this

29-8901 Gasket set