Hi all,
I am trying to find the part number for the O-300D crankshaft?
Thanks!
Max
O-300D Crankshaft P/N
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O-300D Crankshaft P/N
Max Platts 1955 Cessna 170B N3431D
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Re: O-300D Crankshaft P/N
628124 is the O-300-C and O-300-D crankshaft PN according to the 2011 Illustrated Parts Cat.
531113 is the crankshaft for the C-145-2H and O-300-B.
530860 is the crankshaft for the C-145-2 and O-300-A.
(A50303A1 is the crankshaft for the very similar C-125-2. It has a different “throw” but otherwise appears similar and MUST NOT BE USED in a C-145/O-300 engine.)
Int’l C-170 Assoc’n Members may dnload the complete TCM Illustrated Parts Catalog (IPC) Form X30014, Change 2, dated August 2011 at http://cessna170.org/forums/viewtopic.php?f=29&t=13249
531113 is the crankshaft for the C-145-2H and O-300-B.
530860 is the crankshaft for the C-145-2 and O-300-A.
(A50303A1 is the crankshaft for the very similar C-125-2. It has a different “throw” but otherwise appears similar and MUST NOT BE USED in a C-145/O-300 engine.)
Int’l C-170 Assoc’n Members may dnload the complete TCM Illustrated Parts Catalog (IPC) Form X30014, Change 2, dated August 2011 at http://cessna170.org/forums/viewtopic.php?f=29&t=13249
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.

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Re: O-300D Crankshaft P/N
Great! Thank you very much for the info!
Max Platts 1955 Cessna 170B N3431D
Cessna® is a registered trademark of Textron Aviation, Inc. The International Cessna® 170 Association is an independent owners/operators association dedicated to C170 aircraft and early O-300-powered C172s. We are not affiliated with Cessna® or Textron Aviation, Inc. in any way.