This is a complete kit to upgrade the main power feed wire from the alternator to the vehicle on most Fords. Basically, the OEM wire from the alternator to the vehicle was not designed to carry the added load of higher amp alternators. If you use the stock wires again or not is your choice, but using this large (#4 Gauge) wire kit will add the safe carrying capacity needed for lengths up to 10 feet. When using our high output alternators you must upgrade this cable to retain warranty coverage.

For vehicles where the alternator and starter relay/battery are on the same side of the vehicle, the SHORT kit is required. Examples would be 85 and older Mustang 5.0, early 90's and older F-Series

Mid Mount or Medium Kits include: large #4 ultra-flexible Stereo Grade wire with sealed 360° crimped terminals, 200 amp in-line fuse.

These kits can also be used on upgrades utilizing alternators from any other manufacturer with a 3/16-threaded battery (+) stud from the alternator. The ring terminal on the alternator side is 1/4 I.D.

#4 gauge wire kits are recommended on all upgrades but required when upgrading any 1993 or older vehicle with a 130-amp or 200-amp alternator

All kits are provided with 200-amp Littlefuse Brand Fuse and Holder and black corrugated wire loom. Based on Littlefuse performance specifications and tolerances this is the appropriate rating. Please do not increase or decrease the fuse amperage value

THESE KITS ARE NOT INTENDED TO REPLACE THE OEM WIRE – but are large enough to work without the stock wire in race / kit applications where there is no other wiring to upgrade. There are many opinions on the internet about cable use. By using both the stock and the larger cable, everything that worked before the upgrade will still work. The bottom line, at least you must use the #4 wire kit when upgrading alternators

100% new components and direct bolt in case.
Custom rotor/stator to decrease air gap to improve idle output.
Balanced rotor and 0 run-out slip rings to improve unit life and eliminate battery light flicker.
Heavy duty 12 diode twin rectifier plates
Improved air flow to ensure long service life in severe conditions
NTN premium and NSK USA bearings.
This unit ships with a 69mm pulley and is suitable for stock to 6LB lowers. If you have a larger pulley or spin in excess of 7600rpm with a 6LB lower please specify in your order notes or tell your sales representative when placing your order. No RPM limitation on stock, 2lb, or 4lb lower pulley

270A J2Fab units REQUIRE cable upgrade.

Call for availability, could potentially take up to 2 weeks to ship.