Search by number:
-19%
Lester 11785ND400MB
Lester 11785ND400MB

400AMP PurePower Hairpin High Output Alternator Chevrolet GMC Trucks 4.3L, 5.3L, 6.2L 2014-2020

✓ In Stock
✓ Fast Shipping
✓ Free Tech Support
✓ Free 2Yrs Warranty, Lifetime Available
$799.00 $649.00

The 400 amp Pure Power alternator is an excellent step up with twice the charging power than your original alternator. Amazing output at low idle this gold standard Pure Power alternator will keep up with all your vehicle power demands.

Universal BIG 3 Wire Kit. 1/0 AWG - Premium Grade SGT Wire
(Required for all High Output alternators)

Our Big 3 wire upgrade kit is a must upgrade when purchasing your new Pure Power high output alternator. It is important to understand that when upgrading from a stock alternator to a high output alternator your factory wiring harness becomes less efficient because it was not designed to handle 250 to 400 amps of current flow. By simply adding the Pure Power Big 3 wire kit in combination with your factory wire harness will allow your new high output alternator to produce its maximum amperage upon the vehicle demands.

What's Included:
4 ft of 1/0 Guage SGT Positive Cable
3 ft of 1/0 Guage SGT Negative Cable
30 in. of 1/0 Guage SGT Negative Cable
6 Pcs. 5/16 Ring Terminal
Machine crimped ends with weather resistant adhesive heat shrink tubing
Instruction Sheet


Pure Power Series

02598475
Features
  • Installation Note:
    This unit comes equipped with a smaller alternator pulley, and we recommend using a ½ inch shorter drive belt for proper belt tension. For information and help to identify your current belt size and locating the ½ inch shorter belt size needed, refer to our Technical Notes, Reducing Your Vehicle's Belt Size | TAE (tucsonalternator.com). Our smaller drive pulley is not recommended for sustained use above 5,500 RPM engine speeds.
  • The highest charging output, at idle, in the industry
  • Amazing heat dissipation
  • Durable 6phase Hairpin stator technology
  • 12 70 amp avalanche diodes for durability
  • OEM SKF high heat bearings
  • OEM brushes and brush holder for extreme long life
  • Every alternator is endurance tested on the most advanced dyno tester in the industry, DV Electronics/Alt-98, to ensure the correct performance specs and durability.
  • Pure Power has redesigned this alternator using a 4 pin style regulator which is different than the OEM 2 pin style ECU controlled alternator. This new design improves performance by eliminating voltage fluctuation customers often get from other manufactures brands. Your new Pure Power alternator is designed to bypass the RVC charging system by simply connecting the red wire, coming from the preinstalled regulator wire harness, to a tested 12 volt switched source. You’ll then take the original 2 pin plug that was connected to your old alternator and plug it directly to the 2 PIN BYPASS MODULE, we provided. Upon completion there should be no check battery light and your voltage will be strong and stable.


Specs

Mounting type
Direct OEM Replacement
Output Voltage
14.8
Stator configuration
6 Phase Hairpin
Amperage
400
Max amps hot
365
IDLE amps
240
IDLE amps hot
230
Pulley type
6 Groove Steel
Pulley Grooves
6
Rectifier
12 70 amp press fit diodes
Rectifier heatsink
Aluminum
Battery terminal size
8MM X 1.25 Copper
Warranty
24 Months Repair Warranty



CUSTOMER CARE
Industry leading 2 year warranty
World class customer service
BENEFITS OF JOINING THE PUREPOWER FAMILY:
ULTIMATE PERFORMANCE
Pure Power alternators aren’t just built to produce the maximum amperage, they’re built to give you the most amperage at idling speeds.
EASY DIRECT REPLACEMENT
Every Pure Power alternator is custom built to a direct fit.
SUPERIOR QUALITY
Using only the highest quality parts assures our customers their new Pure Power alternator is built to lasts a Lifetime
PURE POWER COMMITMENT
When you purchase your High Output Alternator, you join the Pure Power family. This family consists of car audio users, diesel owners, off roaders, along with our 5-star customer service team that is always here for you.

NEED HELP? CALL US 1-520-622-7395

M-F 8-5 / SAT. 9-2


FAST SHIPPING
Orders placed by 2pm EAST will be processed same day

TAE/CAE 2024
PayPal
Credit Card Processing
Tucson, AZ
M-F: 8:00 AM to 5:00 PM
Sat: 9:00 AM to 2:00 PM
Sun: Closed

Phoenix, AZ
M-F: 7:30 AM to 5:00 PM
Sat: 9:00 AM to 5:00 PM
Sun: Closed