I have a leaking rear main seal it is the rope type. I have seen on here i can use a rubber main seal. put the parts books i have show only rope one. what year of 455 seal will work. my books only show rope for them also. thanks Archie
All 455s had rope seal. The seal you need is a Ford 200 6 cylinder seal. Some were using a Caddy seal but it had to be cut, the Ford seal works just fine. Jim N.
Here is a list of industry part numbers and applications for the front (one piece nitrile) and rear (2-piece split nitrile) main seals (note that these are available from the Buick-specific vendors as well). Front: Fel-Pro 470543 National 450446 Napa NOS19786 Napa NOS19785 Rear (no-trim): 1972 Ford Maverick 200 cid L6 Fel-Pro BS30135 National 5116 Napa JV730P Napa NOS204 Ford C9AZ6701B (part) Ford C9AE6701B (engineering) (edit - added these) Detroit 17042 McCord BS167 ROL RS29050 Victor JV730P Rear (trim-to-fit): 1970 Caddy Deville 472 cid Fel-Pro BS40012 National 5068 Napa JV600 (edit - added these) Detroit 17008 McCord BS188 ROL RS29115 Victor JV600
