2004 Humvee H1 HMMWV M1123 not M998 Do yourself a favor and read the listing!

  • Make: Hummer
  • Model: H1
  • Trim: M1123
  • Year: 2004
  • Mileage: 60
  • VIN: 11111111111111111
  • Color: CAMO
  • Engine size: 6.5L N/A diesel (serpentine belt)
  • Number of cylinders: 8
  • Fuel: Diesel
  • Transmission: Automatic
  • Drive type: AWD
  • Interior color: Green
  • Vehicle Title: Clear
  • Interested? Contact seller!

2004 Hummer H1 M1123 Description

Ok, here goes...school is in session......
First of all, my phone number Blair Outlan 901-378-8877 and you get me, no sales staff etc.

This is a Marine M1123 that came off the AM General assembly line in 2004. Tagged and Titled in my name in Tennessee.In 2009 it was taken in and had "MAK Armor" installed, at that time a new drive-line, including but not limited to: a fresh engine, transmission, t-case, new springs, halfshafts, brakes, geared hubs etc.The M1123 is down the line 2 "generations" past the M998 M1038 or any rendition of a 3 speed truck.
Do not compare a 4 speed truck (3speed with overdrive) with a 3 speed truck. Not apples to apples.Why?A 3 speed truck at 60 mph is above 3000 rpm, although they will potentially do 65 you are at or past redline of the engine (per manufacturer specs). How long do you think you can drive a diesel at redline? An overdrive truck will cruise at 65 all day long, just like a civilian H1 without being over taxed.
So now I'm going to explain the differences between a 3 speed truck (M998, M1038 etc) vs an M11 series truck:
  • 99% of all HMMWVs that have been released to the public are 3 speed, not overdrive.

  • An overdrive truck has a "Park" selector on the gear shift selector, all your 3 speed trucks have no park, just an emergency brake.

  • An M11 series truck has a serpentine 8-rib belt, if you look at a 3 speed truck with an old 6.5 or 6.2, notice the 1970s V-belts flapping all over the place, impossible to get tight and require much more maintenance over the years. An m11 series truck has a clutched alternator/generator (usually 200amp) whereas the older trucks have a 60 or 100 amp that isn't clutched. So, by the nature of a larger serpentine belt the engine stays much more balanced - hence smoother running of the engine.

  • All M11 series trucks have bigger brakes, they are what we call 12,100 brakes, and are larger rotors than the 998s. They also have larger diameter half shafts or CV shafts. (more splines) They also have an improved design on the upper and lower ball joints, with a reenforced upper mount. The idler and pittman arm are also upgraded with the new "problem solver" style.

  • OVERDRIVE: You would think that you could upgrade an older truck to an overdrive, let me explain why it's cost prohibitive (to do it Mill-spec):
  • New 4L80 Transmission $2000
  • New 242 Transfer case (the 3 speed has an older 218 not suitable for 65 mph+) $1600
  • Transmission computer (sealed water-proof and EMP proof) $1000
  • Body harness (if you can find one) and the body has to come off to install it to military specs $2000
  • Gear shift selector with Park, if you can find one, and the linkages for the different T-case/Trans$600
  • Torque converter lock up light and Transmission light installed $400
  • Rear drive shaft, different yokes on both ends $600
  • A crank trigger and throttle position sensor and engine harness to accommodate the sensors $?
  • Dipstick tube and dipstick because of fitment issues
  • Transmission crossmember has to change (length of the 4L80)
  • Rear diff input yoke, which means the pinion needs to be reset/bearings
  • Re-plumb the Central venting system
  • Add 24v to 12v circuit relay/harness (also means the newer style generator with 14.4v output.
  • and LABOR to do steps 1-13 $$$$$$$$$$$$

    • Power steering system has a heavy duty high pressure pump, a filtered remote revisorwith sight glass, fluid isn't sitting on a hot pump, and holds more fluid. And for service it's at the highest point on the engine so it's easier to bleed.

    • Improved ducting system for the Heater, different crossover, better flow, especially for the driver.

    • High back seats, 3 point belts, driver's seat has a new base that has a much better adjuster-

    • All serpentine already have the location for the Air conditioning compressor, whereas some of the older trucks do not!

    • So many more things, just can't list them all.

    So you want a 4 man, not a 2 door pick-up :Ok, no problem, for the same buy it now price, I will convert this truck into a 4 man with a brand new soft top ($3000) for no additional charge. You will loose the air conditioning however. People don't realize these things are modular, a 2 man can be a 4 man with whatever top you choose.

    Anyhow, I'm sure for the newbie Humvee enthusiast you're likely in information overload mode......
    So call me, I'll explain in further detail,
    Blair Outlan 901-378-8877
    A little about myself and my shop:
    In 1995-1998 I was the Manager of a Hummer dealership (back when there were no other models-no H2 or H3) Thompson Hummer in Memphis, TN. After that, I went out on my own buying and selling as well as driving H1's and Humvees.I have bought and sold thousands of H1's and Humvees in my career, it's my life and my passion.My small shop has built and sold trucks to Boeing, Blackwater, DARC, Raytheon, Mustang, Tier 1, BAE, and many others. We know the product better than anyone, hands down. We will not polish or paint rivits or paint the truck pink, it's just not us-- mill spec or better. We will not put carpet in your truck or promise you things that have no business being in a Humvee.
    Real people, real stuff, live life... enjoy...Blair~
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