Mechman

400 Amp High Output Alternator 05-13 GM Truck 4.3L 4.8L 5.3L 5.7L 6.0L

(2 reviews) Write a Review
SKU:
8302400
MPN:
8302250
Availability:
Standard build time on alternators is 2 to 3 week that are not in stock with Down4Sound
  • Mechman 400 Amp High Output Alternator 05-13 GM Truck 4.3L 4.8L 5.3L 5.7L 6.0L
  • Mechman 400 Amp High Output Alternator 05-13 GM Truck 4.3L 4.8L 5.3L 5.7L 6.0L
  • Mechman 400 Amp High Output Alternator 05-13 GM Truck 4.3L 4.8L 5.3L 5.7L 6.0L
  • Mechman 400 Amp High Output Alternator 05-13 GM Truck 4.3L 4.8L 5.3L 5.7L 6.0L
  • Mechman 400 Amp High Output Alternator 05-13 GM Truck 4.3L 4.8L 5.3L 5.7L 6.0L
  • Mechman 400 Amp High Output Alternator 05-13 GM Truck 4.3L 4.8L 5.3L 5.7L 6.0L
  • Mechman 400 Amp High Output Alternator 05-13 GM Truck 4.3L 4.8L 5.3L 5.7L 6.0L
MSRP: $599.00
$549.00
— You save $50.00

Description

Installation Notes:

This unit comes equipped with a smaller 1.75 inch diameter alternator pulley, and will require a slightly shorter drive belt for proper belt tension.  Not recommended for sustained use above 5,000 RPM engine speed. ((Check instructions section for finding belt sizes and wiring)). If you DO NOT use the correct shorter belt, this will result in very low to no output and create extra work load for the alternator.

The Elite series offers the highest possible amperage and durability available in a large case alternator. 6 phase technology combined with massive twin rectifier assemblies and 12 diodes makes these alternators totally durable for daily use, while still maintaining 200+ amps at engine idle speeds.

These alternators use the more robust 4 pin style regulator than the OE 2 pin ECU controlled alternator. There is no extreme voltage fluctuation as this will bypass the RVC charging system on all 2005> GM truck applications. Simply install the included 1 wire P101 harness to a tested 12v switched source and plug in the included P103 module into the vehicles 2 pin original alternator wiring harness. No check battery light, no computer controlled voltage swings. The voltage you want, when you want it!

Fitments:

Name
Model
Engine
Year(s)
BUICK
Rainier
5.3
07-08
CADILLAC
Escalade
5.7 / 6.0 / 6.2
05-13
CHEVROLET
Avalanche
All Engines
05-13
CHEVROLET
Full Size Truck/Silverado
4.3
05-13
CHEVROLET
Full Size Truck/Silverado
4.8
05-13
CHEVROLET
Full Size Truck/Silverado
5.3
05-13
CHEVROLET
Full Size Truck/Silverado
6.0
05-13
CHEVROLET
Full Size Truck/Silverado
6.2
09-13
CHEVROLET
Full Size Truck/Silverado
8.1
06-07
CHEVROLET
Suburban
All Gas Engines
05-14
CHEVROLET
Tahoe/Full Size Blazer
All Gas Engines
05-13
CHEVROLET
Trailblazer
5.3
07-09
CHEVROLET
Trailblazer
6.0
07-09
GMC
Envoy
5.3
07-08
GMC
Full Size Truck / Sierra
4.3
05-13
GMC
Full Size Truck / Sierra
4.8
05-13
GMC
Full Size Truck / Sierra
5.3
05-13
GMC
Full Size Truck / Sierra
6.0
05-13
GMC
Full Size Truck / Sierra
6.2
07-13
GMC
Full Size Truck / Sierra
8.1
06-07
GMC
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Warranty Information

2 year performance guarantee.

The MechMan two year warranty applies to Mechman Alternators sold ON or AFTER 07/13/2011. This limited two year warranty allows the customer to return his or her MechMan alternator for repair for a full two years after the alternator purchase date. This warranty does not cover other parts or equipment on the vehicle, and does not cover labor for removal or installation of the alternator. This warranty is VOID if the MechMan alternator is modified, physically abused, misused, improperly installed, or is not used in the application for which it was designed. The MechMan two year warranty is non-transferrable. The customer must include a copy of the original invoice when sending in their alternator in order to receive warranty service. The customer is responsible for shipping the alternator to the Mechman facility for warranty service, Mechman will pay return shipping back to the customer for all alternators under warranty. As an added service, MechMan will also service any MechMan alternator of any age or condition for the cost of parts and return shipping. (We provide the labor to repair the alternator for free!)

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2 Reviews

  • 5
    Mechman 400 amp alternator

    Posted by Tony Steinhart on Apr 04, 2024

    Good craftsmanship great upgrade for your vehicle power needs

  • 5
    Exceeds expectations

    Posted by Brian Beeks on Oct 05, 2022

    I didn't realize my system would be louder, more clear, and slam harder until I bought this. I'm running 3000-3500 watts rms and I have very small voltage drops, doesn't go below 14. With stock alternator I was below 13. Big difference, and worth it for someone that wants to slam their subs everyday. Thanks Mechman and JP

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