Description

ZF 6HP26, 6HP28 2008 Parts Catalog – Factory Spare Parts Reference for 6-Speed Automatics

I’ve lost count of how many times a student or even a seasoned tech has come to me holding the wrong part because they guessed the number from a generic cross-reference. That mistake costs hours and money. This ZF 6HP26, 6HP28 2008 Parts Catalog is the factory-issued spare parts list, 37 pages long, and it’s what I keep on my bench when I’m rebuilding one of these six-speed ZF automatics. If you’ve ever had to pull a transmission a second time because the seal kit didn’t match the housing variant, you know the value of having the exact factory part numbers in front of you.

Torque Specs and Fluid Capacities: Page 2

Page 2 lists torque values for converter-to-drive plate bolts, valve body bolts, and other critical fasteners. Also oil capacity and approved lubricants. ZF is strict about fluid – they specify exactly which oils. Don’t guess. If you put in the wrong ATF, you’ll be pulling it back out. I’ve had to flush a 6HP26 twice because someone used Dexron instead of the ZF LifeguardFluid. That was a long weekend.

6HP26/6HP28 Internal Groups: Couplings A Through E

The catalog breaks down every subassembly. Couplings A, B, C, D, E each get their own page group. You can find the exact piston, seals, springs, and clutch plates for each coupling. That’s pages 15-19. If you’re overhauling one of these, you order the complete kit from the kit content section (pages 30-35) or piece it together if you’re sourcing individual worn parts. The choice is yours, but you need the correct part number.

Are the Mechatronic and Shift System Groups Covered?

Yes. Page 22 is the Mechatronic group – the valve body and electronics that control shifting on these ZF boxes. Pages 23-24 cover the E-Shift and M-Shift gear shift systems. I’ve seen a lot of electrical issues on the 6HP26 where the mechatronic unit gets misdiagnosed. With this catalog, you can order the exact solenoid or harness piece. Don’t replace the whole mechatronic if it’s just a stuck solenoid. That’s a $1,500 mistake.

Selective Shims and Snap Rings: Page 26

Page 26 lists selective shims and page 27-28 selective snap rings. When you’re measuring end play on these transmissions, you need the correct shim thickness. The catalog gives you every available thickness. Without this, you’re stacking washers like a shade-tree amateur.

Get the right shim.

3 Kits Content Sections You Need to Check

Pages 30 through 35 list the kit contents – overhaul kits, seal kits, clutch kits. If you’re rebuilding, buy the factory kit. Aftermarket kits often substitute a seal that doesn’t fit. ZF designed each seal for a specific groove depth. Don’t learn that lesson on a customer’s transmission. The kit content breakdown tells you exactly what’s in each package.

Source Validity: OEM vs Aftermarket Documentation

This is a ZF factory document, printed in 2008. It’s not a third-party compilation. I’ve seen aftermarket parts catalogs that list parts that don’t exist for certain 6HP28 variants. The type plate information on page 9 shows how to identify your specific transmission – 6HP26 1068 010 XXX or 6HP28 1068 040 XXX. If you have a variation, the catalog cross-references the correct parts. Aftermarket doesn’t do that. For background on transmission technology, check the Automotive Industry Overview on Wikipedia. Understanding battery systems? Automotive Battery article.

If you work on other ZF transmissions, look at ZF 16S151 ECOSPLIT III & 16S151 R 2007 Parts Catalog and ZF 16S221 ECOSPLIT III 1316 2007 Parts Catalog OEM Specs for heavy duty units.

Does this catalog include torque values for all bolts?

Only the critical ones on page 2.

Can I use this catalog to rebuild a 6HP26 without the service manual?

No, this is a parts catalog, not a service manual. You need the ZF service manual for disassembly and assembly procedures, clearance checks, and troubleshooting. What this catalog gives you is the exact ZF part numbers, shim selections, and kit contents. I always recommend both: the ZF 6HP26 Troubleshooting Manual – Factory Mechatronics Guide alongside this parts catalog. The parts catalog tells you what to order; the troubleshooting manual tells you what to measure. Together they cover the whole job. Don’t try to wing it with just one.

So if you’re pulling a 6HP26 or 6HP28 out of a BMW, Jaguar, or Land Rover, get the factory specification before you start ordering parts. I’ve been doing this since 1996, and I’ve seen more transmissions ruined by cheap aftermarket parts than by wear. Access the Factory Manual from AutoRepairManuals – it’s the 37-page PDF, searchable, and printed from the ZF master. Keep it on your tablet or your bench. You’ll thank yourself the first time you look up a part number and it matches the one on the housing.