0
Mechman high output alternators · Authorized dealer
A diesel Hummer H1 is often kept for the long haul: refreshed, maintained and taken places where a dead battery is a serious problem. Many are now due for charging system work after years of use. Listed here: each Mechman alternator for 2004-2006 Hummer H1 diesel models. Match your year in the vehicle finder at the top of the page, then choose a Hummer H1 high output alternator built for remote-travel reliability.
Most surviving H1s have years of heat, dust and vibration behind them. When an owner refreshes the truck, the charging system is a logical place to start, especially if new equipment is going on: auxiliary lighting, a winch, communication radios, a fridge and a second battery. A diesel also needs healthy batteries for cold starts. A Hummer H1 high output alternator restores dependable charging and adds headroom for that gear.
Fitment covers a single application: 2004-2006 diesel models, and you can confirm the engine in the Make, Model, Year and Engine search above. The series for those trucks is a large case alternator with a side output stud. Check how your current unit mounts and where the output stud sits before choosing, especially on a truck that has had earlier electrical work.
For lighting, radios and a fridge, 250 Amp is a solid upgrade. 320 Amp adds margin for a winch and a second battery. 370 Amp suits a full expedition setup with an inverter. 400 Amp covers trucks that combine all of that with an audio system or heavy auxiliary equipment. On a truck that travels far from help, a Hummer H1 high output alternator with spare capacity is simple insurance against a dead battery.
Most units here use billet housings, machined from solid aluminum, in finishes such as dark blue, black, gold and purple. Standard housings keep the original look. While the alternator is out, replace tired cables with a Big 3 wiring kit and check the alternator harness and regulator connections. A fresh pair from our battery collection completes the job. For other models, see our GM alternator lineup. Each unit is from our Mechman high output alternators line, suited to a truck that has to keep going.
Shop Pay InstallmentsPay over time, powered by Affirm
Lease-to-own with SnapNo credit needed¹
Pay later with SezzleFlexible payment options
Shop Pay Installments: Rates from 0-36% APR. Payment options through Shop Pay Installments are subject to an eligibility check and are provided by these lending partners: affirm.com/lenders. Options depend on your purchase amount, and a down payment may be required. Snap: The advertised service is a lease-to-own agreement provided by Snap RTO LLC. Lease-to-own financing is not available to residents of Minnesota, New Jersey, and Wisconsin. ¹ Not all applicants are approved. While no credit history is required, Snap obtains information from consumer reporting agencies in connection with submitted applications, and your score with those agencies may be affected. Sezzle: Issued by WebBank or Sezzle. See loan agreement for details. Refurbished items are not eligible for financing or leasing.
Before you browse
We use cookies to run the store, to measure how it performs, and — only if you allow it — to show you our products on other sites. You can change your mind at any time. Read our privacy policy
Necessary cookies always run — the store cannot work without them. Everything else is your call.
Necessary
The cart, checkout, sign-in, fraud prevention and security. These cannot be switched off.
Preferences
Remembers your currency, region and recently viewed products.
Analytics
Measures how the store is used so we can fix what is broken and improve what is not.
Marketing
Lets us measure our advertising and show you our products on other websites. Turning this off also opts you out of the sale and sharing of your information for advertising.
