8HP45 Clutch Drum, new and ready to install. Fits the 8HP45. Ships fast from the USA.
If your ZF 8HP45 or Chrysler 845RE slips or flares in 2nd, 3rd, 4th, 6th and 8th while 1st, 5th, 7th and reverse still pull clean, the E clutch is the first place a rebuilder looks, and the drum that carries it is a known weak point once power goes up. This is a new E-clutch drum machined from billet 7075-T6 aluminum, with the 53-spline pattern used by the 8HP45, and it references OE number 1090471017. It is aimed at the 3.6L Ram 1500, Charger, 300, Durango and Grand Cherokee, and the BMW, Jaguar and Land Rover models built around the same gearbox.
The 8HP gets eight forward speeds and reverse from four planetary gearsets, two brakes (A and B) and three rotating clutches (C, D and E), with exactly three elements applied in every gear. According to Sonnax's ZF8 apply chart, clutch E is on in 2nd, 3rd, 4th, 6th and 8th, so it does more work than any other element in normal driving. The drum holds the E friction and steel plates and transmits that torque through its splines. When a factory drum cracks, or its spline teeth and plate lugs wear, pressure and holding power fall off and the shifts into those five gears start to flare or slip. The valve body side of the circuit is controlled by solenoid EDS-4.
Do not pull the case apart on a shift complaint alone. BMW's bulletin SI B24 02 13 tells technicians to check fluid level on every 8HP concern and not to reset adaptations first, because a low level imitates clutch slip. Worn clutch holding valve bores in the valve body can also burn clutches and cause flare shifts, which Sonnax documents for the 8HP45, 8HP55, 8HP70 and 845RE. Our ZF8HP common problems guide walks through those checks. If the fluid is correct, the valve body is ruled out and the slip follows the E-clutch gears, the drum and its clutch pack are next.
This drum is for the first-generation 8HP45, which Chrysler builds as the 845RE. The application list supplied with it covers BMW 1, 2, 3, 4, 5, 6 and 7 Series and X-models with the 8HP45 (F20, F22, F30, F32, F10, F12, F15 and E70/E84/E89 chassis), Jaguar XE and XF 2013-2015 and XJ 2013-up, Range Rover L322 2011-2012 and L405 2012-up, Chrysler 300 2011-up, Dodge Charger 2012-up, Durango 3.6L 2014-2017, Jeep Grand Cherokee WK2 2014-2016 and Ram 1500 3.6L 2012-2019. Count the splines on your old drum: this one is 53. The 8HP70 uses a 38-spline E drum, and the second-generation 8HP50 and 850RE are a separate family, so send us your year and VIN if you are not sure which unit you have. All matching parts are on our ZF 8HP parts page.
| Fits | 8HP45 |
| Part type | Clutch Drum |
| Condition | New |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Clutch E is applied in 2nd, 3rd, 4th, 6th and 8th. In 1st, 5th, 7th and reverse it is released, which is why a failed E drum usually leaves those gears working while the others slip.
No. This drum has the 53-spline pattern of the 8HP45 and 845RE. The 8HP70 uses a 38-spline E drum, which we list separately. Count the splines on your old part before ordering.
Do not assume it does. The second-generation 8HP50, 8HP75 and 850RE are treated as a separate family from the 8HP45 and 845RE. Send us your year and VIN and we will confirm which drum your transmission needs.
At minimum the E-clutch frictions, steels and piston seals, plus the sealing rings that feed the drum. If the drum failed from slipping, inspect the valve body holding valve bores too, or the new parts can burn up the same way.
ZF LifeguardFluid 8 only. ZF's data sheet states that only LifeguardFluid 8 or 9 is approved, and the level must be set at the specified fluid temperature, not by guessing a quart count.
