TH400 (3L80) Modulator, Washer Kit and Flywheel

Here some other parts that we carry for the the Turbo Hydromatic THM-400 (a/k/a 3L80) automatic transmission.

The thrust washer kit covers the years 1965 to 1998. The Modulator pictured below is the single-red-stripe adjustable modulator. This is the one that is usually shipped when one is ordered unless you specify another when ordering. All modulators are good for 1965 to 1998 and here are the other options:

Black and Red Stripe
Dual Red Stripe
Mechanical Modulator Controlled by Cable
also available: Vacuum Regulator Pump

We have several flywheels available too. The one pictured is for 1986 Blazer with the 6.2L Diesel; the flywheel is 14.13" wide with 139 teeth.

Borg Warner BW-4405 Transfer Case Clutch Housing Assembly

Unlike other chain driven transfer cases, the BW4405 transfer case has a clutch housing. The clutch housing is part of the system that engages and disengages the transfer case.

When ordering the clutch housing assembly you will receive the housing, clutches, steels and other parts necessary for its proper use and replacement as pictured below.

A404, A413, A470, A670 Governor

The A404 (30TH), A413, A470 and the A670 (all three a/k/a 31TH) share the same governor. The only thing to note when ordering the governor is the year. One is from 1978 to 1980 and the other one is from 1981 and up (pictured below).

At time of this posting the 78-80 was available reman or new and the other one only reman. Also available are the:

Anti-Stick Spring and Bracket (installs outside the governor)
Anti-Stick Spring (installs inside the governor)
Governor Support and Support Retainer
Oil Baffel - inside Differential or Extension Housing

A500 (40RH, 42RE....) Reverse Drum and Center Support

The A-500, 40RH, 42RH, 42RE and 44RE are all in the same transmission family line. The RH indicates non-electric and the RE indicates the unit is controlled electronically instead of hydraulically.

The reverse drum comes in two different design; one comes with no washer under the support snap ring (88-04) and the other with a washer under the support snap ring (90-04). At first glance you can not even tell the difference and it is necessary to properly identify the one you need when ordering.

Over drive piston housing (center support) originally came with or without governor feed holes. The new ones retrofits all past ones and are compatible with or without the governor feed holes.

ZF-6HP26, 6HP26A, 6HP26X Transmission - Information

The ZF 6HP26 and 6HP28 series are a rear wheel drive 6 speed automatic transmission.

Depending on model input torque can range from 326 to 444 ft lbs.

Gear Ratio: 1st - 4.17 / 2nd - 2.34 / 3rd - 1.52 / 4th - 1.14 / 5th - 0.87 / 6th - 0.69 / Rev - 3.40

Oil Capacity: Approximately 10 liters including cooling system.

The ZF6HP26 is used by Audi, BMW, Jaguar, Ford and Lincoln. Ford has designated it a the 6R60, Audi as the 09E. The ZF6HP26A 61 and the ZF6HP28AF are an all wheel drive unit and are also used in the Audi and BMW. The ZF6HP26X and the ZF6HP28X is the 4x4 version of the unit; in addition to the the car manufactures listed above the Ranger Rover uses this version.

Most parts are shared among the different designs but there will be some differences. Kits could come with extra parts to accommodate more than one design. Below you will find pictures for the overhaul kit, friction module, steel module (all together make it a master kit), and filter. The filter is a pan and filter assembly.

Here is a short list of vehicle models equipped with this transmission:
Audi: A4, A6, A8, TT, S6, S8, Cabriolet, Quattro
BMW: 545i, 5 Series, 6 Series, 645ci, 645Li, 745i, 745Li, 750i, 750Li, X5
Jaguar: S Type, XJ Vanden Plas, XJ8, XJ8L, XJR, Super 8, XK8, XKR
Land Rover: LR3, Ranger Rover Sport HE and Sport
Lincoln: Navigator
Ford: