Alternator Alternatives
Published 2007 Updated 2021
Here is some great information on various alternators that will fit the roadster from Ray Bourgeois.
Here is some alternator info for you. I have just picked up 2 alternators (one to be a spare) for my non-smog 1600 from Wilson Auto Electric shown below. I got them from here because they happened to have their head office head in my home town, but they also have plenty of distributors through out the States.
They are listed under the 1968 510 but they are identical to the Mitsubishi OEM# AC300 that came on the non-smog SPL311.
In the past, on my other 1600, I have also used the Mazda RX2 alternator Mitsubishi #AG2050T5 F2.
Note 1----This alternator has wider spaced double bottom mount and will require minor mods to fit the engine block mount (i.e. remove some engine mount facing to maintain alignment and use spacer to accommodate wider mount spacing.
Another re-manufacturer in the Texas area has a $67 alternator which also will plug in and bolt on, so I included the link.
I realize that the emission controlled SPL311 & SRL311's used the Mitsubishi OEM# AS2030A2 alternators and that they had a single long lug for mounting to engine. Unfortunately I have not located the Lester number for them at this time to get that series of interchanges for that casting. Hopefully I can find someone with a Lester interchange catalog or Cd to get the info.
Wilson Auto Electric
Wilson V20 Rebuilt Mitsubishi 12 volt 30 amp (less pulley) # A1T05476 ($130 CND -June 2004)
Wilson V20 Rebuilt Mitsubishi 12volt 30 amp (less pulley) # 90-27-300 ($130 CDN -June 2004)
http://www.wilsonautoelectric.com
Other Alternator Interchanges
Ford LT Trucks, Courier 78-72 1.8L All-
Ford LT Trucks, Courier 81-79 2.0L w/ Ext Reg
Ford LT Trucks, Courier 81-77 2.3L w/ Ext Reg
Mazda 616, 618 73-71 1.8L All
Mazda 808, 808 Mizer 77-72 1.6L All
Mazda B Series Pickup 76-72 1.6L B1600
Mazda B Series Pickup 78-77 1.8L B1800
Mazda B Series Pickup 81 2.0L B2000 w/ Ext Reg
Mazda B Series Pickup 80-79 2.0L B2000 w/ Ext Reg
Mazda GLC Sedan & Wagon 78-77 1.3L All
Mazda GLC Sedan & Wagon 79 1.4L All
Mazda RX-2, RX-3, RX-4, R100 72-71 1.1L
Wider Double bottom mounting (see Note 1 above)
Lester interchange numbers
Here is some additional info for the alternators. The Lester interchange numbers for our casting and alternator types should be:
LESTER NUMBER 14103 FOR THE 2 EAR(SINGLE MOUNT) ALTERNATOR-Smog Type
LESTER NUMBER 14104 FOR THE 3 EAR (DOUBLE MOUNT) ALTERNATOR-Non-smog type
Interchange part listings from Wrenchhead Central
Here is some interchange part listings from Wrenchhead Central for both the spl311 and srl311 (2 ear smog type, 3 ear non-smog) Reliance automotive and Westling list the Mitsubishi type. Please note that Hitachi also had some that fit for the roadsters and may have the same Lester number, but I have not confirmed their mounts yet.
Manufacturer Part Number Description Core Charge Price Details
BBB INDUSTRIES, INC. (AUTOMOTI 14103 ALTERNATOR Note: full line; hit.; 25 amp.; v-1g pulley; pic #204-125; sgl bottom mtd. 0.00 *
BBB INDUSTRIES RETAIL 14103 ALTERNATOR Note: superior; hit.; 25 amp.; v-1g pulley; pic #204-125; sgl bottom mtd. 0.00 *
EVANS REBUILT PARTS 14103 ALTERNATOR Note: hit.; 25 amp.; v-1g pulley; pic #204-125; sgl bottom mtd. 0.00 *
GENCO AUTO ELECTRIC 14103 ALTERNATOR Note: hit.; 25 amp.; v-1g pulley; pic #204-125; sgl bottom mtd. 0.00 90.00
GENCO AUTO ELECTRIC 14103 ALTERNATOR Note: hit.; 25 amp.; v-1g pulley; pic #204-125; sgl bottom mtd. 0.00 90.00
GENEX 14103 ALTERNATOR Note: hit.; 25 amp.; v-1g pulley; pic #204-125; sgl bottom mtd. 0.00 *
LESTER 14103 ALTERNATOR Note: hit.; 25 amp.; v-1g pulley; pic #204-125; sgl bottom mtd. 0.00 *
METRON 14103 ALTERNATOR Note: hit.; 25 amp.; v-1g pulley; pic #204-125; sgl bottom mtd. 5.00 47.30
NASTRA AUTOMOTIVE IND., INC. A533 ALTERNATOR Note: re manufactured; w/single foot; 30 amp. 0.00 *
NASTRA AUTOMOTIVE IND., INC. A594 ALTERNATOR Note: re manufactured; w/double foot; 30 amp. 0.00 *
QUALITY REBUILDERS 14103 ALTERNATOR Note: hit.; 25 amp.; v-1g pulley; pic #204-125; sgl bottom mtd. 5.00 90.00
RELIANCE AUTOMOTIVE 41103 ALTERNATOR Note: reman.; mit.; 30 amp.; w/sgl. mtg. ft. 0.00 87.60
RELIANCE AUTOMOTIVE 41104 ALTERNATOR Note: reman.; mit.; 30 amp.; w/dbl. mtg. ft. 0.00 87.60
RELIANCE AUTOMOTIVE R&R ALTERNATOR Note: reman; mit.; 35 amp.; opt. pos. ground 0.00 *
WESTLING 71-14103 ALTERNATOR Note: re manufactured; 25 amps; Hitachi; 2 ear mtd.; u eng.; ext. reg. 6.00 89.98
WESTLING 71-14104 ALTERNATOR Note: re manufactured; 30 amps; Mitsubishi; 3 ear mtd.; u eng.; ext. reg. 2.00 99.98
PRECISION PARTS REMAN DAA715 ALTERNATOR-REMAN Note: 1 per veh; 30 amp; *
There is an alternator re manufacturer located in Florida which lists our Roadsters Nissan single and double bottom mount alternators in their electronic interchange catalog.
From to the Roadster parts book, here is the following part numbers you should be looking for in their catalog. SP311 (double bottom mounting) Mitsubishi AC300/12 Nissan 23100-14600 Nissan 23100-14601 Nissan 23100-14602 Nissan 23100-14615
SR311 (single bottom mounting) Nissan 23100-20110 Nissan 23100-20111 Nissan 23100-20115
So as you can see from Ray's information there are many alternatives for stock alternators for both pre-smog and smog type cars. Thanks much Ray for the wealth of information.