4R75W Master Rebuild Kit 2004, new and ready to install. Fits the 4R75W. Ships fast from the USA.
When a 2004 Ford truck or SUV with the heavier-duty 4R75W starts slipping on the 1-2 or 2-3 shift, takes a beat to engage Drive, or leaves black friction paste on the pan magnet, the clutch packs inside are usually worn past saving. This 2004 master rebuild kit is a Raybestos kit: the photos show Raybestos clutch packs packaged with the full overhaul gasket and seal set, so one box covers the soft parts for a complete teardown instead of a piece-by-piece repair.
The 4R75W is the higher-torque member of Ford's 4R70W family, a four-speed rear-drive overdrive automatic that changes gears by applying clutch packs and bands in sequence. Heat is the enemy. Once the frictions glaze, apply clearance opens up, the shift stretches out, and the slip makes more heat. Rubber lip seals and sealing rings harden at the same time, so a burnt pack is rarely the only problem. A master kit lets you renew every friction surface and reseal every apply circuit in a single job, which is the only way to get consistent shift timing across all four gears.
2004 is the year to be careful with. ATRA's interchange notes record that Ford changed the ring gear and output speed sensor for 2004 and that the new parts do not interchange with earlier units. The same notes call for the 2004-up non-magnetic sun shell, because the turbine speed sensor added that year reads the forward drum through it. A rebuild with correct frictions but a mixed-year shell or sensor will still throw speed sensor or ratio codes and shift badly.
Before ordering, scan for codes. A solenoid, TSS or OSS fault can mimic slipping and is far cheaper to fix. Check fluid level and condition hot, then drop the pan. Varnish with a clean magnet points toward the valve body or solenoids; heavy friction debris means the clutches are done. A vacuum or air test of each circuit, as laid out in the Sonnax test guide, tells you whether a clutch failure was caused by a valve body leak you need to fix at the same time. Our 4R70W Expedition common problems guide covers the heavy-vehicle failures, and the F-150 shift problems guide walks through diagnosis step by step.
This kit is listed for 2004 4R75W transmissions. 2004 was a crossover year in Ford's lineup, and depending on model, engine and build date a vehicle can carry either a 4R70W or a 4R75W, so read the transmission code on the door tag and the ID tag on the case before you order. Compare your old frictions against the kit when the unit is apart, or send us your year and VIN and we will confirm fitment. If your tag says 4R70W, the 4R70W master rebuild kit for 2004 is the right part. Every 4R70W and 4R75W version we carry is on the 4R70W/4R75W collection page.
| Fits | 4R75W 2004 |
| Part type | Master Rebuild Kit |
| Condition | New |
| Brand | Raybestos |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
The kit pictured is a Raybestos master kit: Raybestos clutch packs together with the overhaul gaskets and seals. If you need a specific item such as bands, a filter or bushings, ask us before ordering and we will confirm what is in the box.
Check the transmission code on the door tag and the ID tag on the transmission case. 2004 vehicles could carry either unit depending on model, engine and build date. If you are unsure, send us the year and VIN and we will check.
No. ATRA notes that the 2004 ring gear and output speed sensor do not interchange with earlier parts, and 2004-up units need the non-magnetic sun shell so the turbine speed sensor can read the forward drum.
MERCON V. Motorcraft recommends MERCON V where MERCON V or MERCON is specified and warns against using it where MERCON LV, ULV, SP or Type F is called for.
Inspect and replace as needed the pump, input drum, bushings and any solenoids that test out of spec, and fix any valve body cross leak. New clutches will not survive a leaking circuit.
