Calais L4-151 2.5L VIN U TBI (1989)
Use the original rotor measurement to determine which rotor package to order, which includes the rotor, slide and vanes.
SERVICE PARTS INFORMATION:
Whenever ordering New Oil pump rotors refer to the following chart and part numbers.
Oil Pump Rotor Selection Chart
Part Number
Rotor Thickness (mm)
Rotor Thickness inches)
8665951
17.9120 - 17.9219
0.7052 - 0.7055
8665952
17.9220 - 17.9319
0.7056 - 0.7059
8665953
17.9320 - 17.9419
0.7060 - 0.7063
8665954
17.9420 - 17.9519
0.7064 - 0.7067
8665955
17.9520 - 17.9619
0.7068 - 0.7071
Parts are expected to be available on 9/1/89. Until then normal part orders will not be accepted by GMSPO. Only verifiable emergency VIP orders will
be accepted. GMSPO will make every effort to obtain parts. All parts will be placed on 400 control to waive VIP surcharges. However, the part will be
shipped premium transportation at dealer's expense. All other order types will be cancelled as incorrectly ordered while the 400 control is in place.
SERVICE MANUAL REFERENCE:
Refer to the Unit Repair Section of your Service Manual whenever replacement of the Oil Pump Assembly is necessary.
