I am needing a set of rings for the 281 engine in my 450. The problem is it has M&W pistons and everyone I talk to says they don't have or can't get. Are the rings different for m&w pistons and does anyone know of a source to purchase them. Thanks Larry
 
Sealed Power might. I also checked my tractor parts supplier. Apparently the places I checked don't use them. I checked with NAPA and they don't show a separate listing for the M&W's. Just thought someone else on here had the same problem and was wondering who the used. I'm guessing the ring lands are different on the M&W's
 
The only number I can see is inside the skirt. It is AP79. The piston is oversize to fit in 4 1/4 sleeve. It has 3 compression rings that according to my measurement are 3/32 and the oil ring is 1/4.
 
You have the sizes right. Hastings has the size listed for 4.125 M&W pistons but couldn't find for the 4.250 size.
 
I went on Hastings web site and it looks like 2C7122 for a case 284 engine has the measurements that I need. Now to find who sells them.
 
(quoted from post at 20:22:17 01/23/19) I went on Hastings web site and it looks like 2C7122 for a case 284 engine has the measurements that I need. Now to find who sells them.

As of several years ago they would sell direct (but at full list price), I've bought many rig sets from them.

Is there no such option anymore?
 

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