5R110W Overhaul Kit 2008, new and ready to install. Fits the 5R110W. Ships fast from the USA.
Searching for a 5R110W overhaul kit for a 2008 Ford Super Duty usually means the truck is already telling you something: a slip when it pulls a trailer up a grade, a late engagement on cold mornings, a leak you keep topping up, or a pan that came off with a gray paste on the magnet. This new kit is listed for 2008 TorqShift units, the first model year behind the 6.4L Power Stroke. The product photo shows a Precision-bagged gasket and seal set together with boxed 5R110W frictions, steel plates, a filter and bonded pistons, so the soft parts for a complete teardown arrive in one order.
The 5R110W has no shift valves in the conventional sense. Each clutch, whether coast, overdrive, intermediate, direct or low/reverse, is applied by its own variable-force solenoid, and the forward clutch is fed from the manual valve. That design only works when every circuit holds the exact pressure the computer asks for. Hardened piston lips, worn Teflon sealing rings and a tired pan or case gasket let that pressure bleed off, and a glazed friction pack cannot hold the load even when the pressure is right. The kit replaces both halves of that problem: it reseals each circuit and renews the plates that actually carry torque.
Spend an hour on diagnosis before spending on parts. Check the fluid level hot, pull codes and record shift data on a road test, and put a gauge on the line pressure port. A single sticking solenoid in the solenoid body can make a good clutch pack look worn, and our 5R110 shift solenoid testing guide shows how to separate the two. If pressure is in spec and the unit still slips in more than one gear, or the pan is full of lining, an overhaul is the honest repair.
This kit is listed for 2008 5R110W transmissions in F-250, F-350, F-450 and F-550 Super Duty trucks. 2008 was a transition year inside the case. Transmission Digest reports that Ford began replacing the external bypass cooler filtration used since 2003 with a redesigned sump filter that year, and that the low one-way clutch became part of the rear planet assembly. Those changes affect which filter, pump and planet a rebuilder needs, so compare the kit contents with your teardown and check the tag on the case. If you are unsure, send us the year and VIN before ordering. Earlier trucks should use the 2005-2007 overhaul kit, and the full range of TorqShift parts is on our 5R110W collection page.
For the full list of hard parts to inspect during the job, read our 5R110 rebuild wear points guide.
| Fits | 5R110W 2008 |
| Part type | Overhaul Kit |
| 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.
It is listed for 2008 5R110W TorqShift transmissions, which were used behind the 6.4L Power Stroke and the gas engines in 2008 Super Duty trucks. Send us your VIN and we will confirm before it ships.
The product photo shows frictions, steel plates, a filter and bonded pistons along with the gasket and seal set. Lay the contents out against your teardown before you start assembly.
Not safely without checking. 2008 brought filtration and rear planet changes, so match the kit to your model year or confirm with us using your VIN.
Replace the low/reverse retaining ring with an updated design, inspect the pump regulator bore and every drum, and service or replace the solenoid body if it has shown erratic shifts or apply-time codes.
Use Motorcraft Mercon SP ATF, check the level hot, then clear the transmission adaptive data with a scan tool and road test so shift timing relearns on the new clutches.
