These part numbers have been handed down through the years and mistakes can be made - It would be wise to take a belt measurement and comparing what you get over the counter before relying on only these numbers. RJ --------------------- Last change Mar 2005 Gates 7440 to Gates 7435 BELTS::::: Studebaker ALTBELT - 62 Daytona 289 - Alt/fan/waterpump - Gates 75t Studebaker Avanti ALT -RQALTB - 63 - 64 Avanti (((R1)))[A/C or no?] -Alternator Belt - OE #1557585: / GATES - #7440 / DAYCO - #15435 / GOODYEAR - #13441 ALT - RQALTB - 63 - 64 Avanti ((( R2))) Alternator Belt 1557585 NAPA 25-11183 Gate: 7440 Goodyear 13441 Dayco 15435 Uniroyal 15435 Mopar B 13441 ALT -RQALTB - 63 - 64 Avanti (((R3 / R4))) Alternator Belt 154650 NAPA 25-11683 Gates 7460 Goodyear 13441 Dayco 15460 Uniroyal 15460 Mopar B 13461A ALT -RQALTB - Alternator belt- (((R4 with A/C))) STUDE 1548509 / NAPA 25-11683 / GATES 7460 / GY 13461 / DAYCO 15460 / UNIROYAL 15460 ALT -RQALTB - 63 - 64 Avanti (((R4))) Alternator Belt 1557587 / NAPA 25-11183 / Dayco 15540 / Gates 7444 / Uniroyal 15540 / Goodyear 13441 Mopar B 13341 Avanti II ALT - Avanti II - RQALTB - Alternator belt, 1979 - Gates XL 7455 ALT -RQALTB - Alternator Belt 1984 Avanti Touring Coupe NAPA 25-7450 ALTB - RQALTB - R3 Belts STUDE 1548509 / NAPA 25-111683* / GATES 7460 / GY 13461 / DAYCO 15460 / UNIROYAL 15460 ALTB - RQALTB R4 Belts STUDE 1557587 / NAPA 25-11183 / GATES 7435 / GY n/a / Dayco 15540 / UNIROYAL 15540 ALTB - RQALTB - R4 with A/C belts STUDE 1548509 / NAPA 25-11683 / GATES 7460 / GY 13461 / DAYCO 15460 / UNIROYAL 15460 ALTB - RQALTB - Alternator Belt 1984 Avanti Touring Coupe 25-7450 NAPA ALTB - RQALTB - 63 - 64 Avanti R3 / R4 Alternator Belt 154650 NAPA 25-11683 Gates 7460 Goodyear 13441 Dayco 15460 Uniroyal 15460 Mopar B 13461A ALTB - RQALTB - 63 - 64 Avanti R1 / R2 Alternator Belt 1557585 NAPA 25-11183 Gate: 7435 Goodyear 13441 Dayco 15435 Uniroyal 15435 Mopar B 13441 ALTB - RQALTB - 63 - 64 Avanti R4 Alternator Belt 1557587 NAPA 25-11183 Dayco 15540 Gates 7444 Uniroyal 15540 Goodyear 13441 Mopar B 13341 ALTB - RQALTB -63-64 Avanti R2 Goodyear 13441--- Alternator belt ALTB - partsrob.txt:RQALTB - 63 - 64 -Alternator Belt - OE #1557585: / GATES - #7435 / DAYCO - #15435 / GOODYEAR - #13441 Mar 2005 NOTE: Gates 7440 appears to be an alternator belt for the high output R2 engine. There were two. The standard was 43 1/2" x 15/32" x 38 Deg. The high output was 45 1/2 x 13/32 x 38 deg. Standard has a Gates number of 8219 /8322 / 8451 the high output is Gates 8463 / 8253 HD AJ That's (7) = 7mm (43)= 43" (0) = .0 inches (5 would be 1/2 inch) Most manufacturers use a similar nomenclature for example: an 8565 would be an 8mm belt 56 1/2" long... Ray ------------------------------------------------------------------- ------Apr 2005 The alternator belt that I finally got to work perfectly on the R-2 is Gates number 7420 which a 25/64" x 42 5/8" belt. I think the Studebaker belt was 15/32" wide, but... The Avanti Parts Book isn't much help on belt configuration. It only lists one belt for all R-1s and R-2s, but the illustration shows one belt for R-1s w/air and all R-2s and a separate belt for R-1's w/o air. Paul Johnson ================================================= Bearings / Bushings ALTB - ALTBRG - - 62 - 64 Hawk 69 Chrysler Alt Front 203 DD BCA Bearings ALTB - ALTBRG - - 62 - 64 Hawk / 69 Chrysler Alt Rear MNJ611 BCA Bearings ALTB - RQALTBR - 63 - 64 Avanti ALL Alternator Front Bearing 1558009 Timken 6203 ALTB - RQALTBU - 63 - 64 Avanti R2 / R3 Alternator Shaft Bushing 1542363 Ford B7AZ2471A ALTB - ALTBS - Alternator brush set- 62-64 Hawk Ignition elec. 68 Chrysler Alt Brush E87X Tungsten ALTB - ALTBS -63 64 Avanti R2 -Standard EX 92--- Alternator brush set. ALTB - ALTBS - 63 - 64 Avanti (ALL) Alternator Brush Set 155802 NAPA A 437 Filko E91-92L Eclin P 437