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Hard Parts

46RE Sprag Clutch 1992

$71.66
In stock • ships from the USA

46RE Sprag Clutch 1992, used and ready to install. Fits the 46RE. Ships fast from the USA.

Fits these transmissions
Secure Stripe checkout • free shipping over $100 • 30-day returns
Secure Stripe checkout
Ships from the USA
30-day returns

About this product

If your Ram, Dakota, Durango or Grand Cherokee pulls away in Drive with the engine flaring before it catches, or will not move forward at all in D while Reverse still works, the low-reverse overrunning clutch in the A518 family is one of the first parts a rebuilder checks. This listing is a used original-equipment outer race for that roller clutch, the 14-roller design the listing dates to 1992-up A518 units, referenced as Chrysler number 4471473. It suits the 46RH, 46RE, 47RH and 47RE as well as the A618, and it is the piece to buy when the old race is scored, cracked or chipped and the rest of the hard parts are sound.

What the overrunning clutch does in a 46RE

The 46RE is a three-speed TorqueFlite-style geartrain with an overdrive unit bolted behind it, and it actually contains two roller clutches. The one this race belongs to lives in the main case at the low-reverse drum. In first gear in D or 2, it is the overrunning clutch, not the rear band, that holds the low-reverse drum so the rear planetary can multiply torque. When the transmission upshifts to second, the drum starts turning the other way and the rollers simply roll off their ramps. That free-wheel handoff is why the 1-2 shift needs no band timing. In manual 1 and in Reverse, the rear band takes over the holding job. The rollers and their springs sit in a cage between the ramped outer race and the smooth race machined on the low-reverse drum hub.

Symptoms that point to the low roller clutch

How to confirm it before you buy

The factory road-test logic makes this one of the easier faults to pin down. The rear clutch is on in every forward range and the roller clutch holds only in first, so if first slips in D and 2 but holds in manual 1, the roller clutch is the problem; if slip shows up in any two forward gears, look at the rear clutch instead. Check fluid level hot before anything else, because a low level gives you the same flare on takeoff. With the case apart, inspect the race face for scoring and the rollers for flats, and replace the race or the whole roller assembly if either is worn. Our 46RE common problems guide covers how a slipping first gear fits in with the other failures on these trucks.

Fitment

The listing calls this a 14-roller outer race for 1992-up A518, A618, 46RH, 46RE, 47RH and 47RE transmissions. Those units were used behind the 5.2L and 5.9L gas V8s and the 5.9L Cummins in Ram pickups and vans, and in Dakota, Durango and Jeep Grand Cherokee models. Before you order, lay your old race next to the photo and count the roller pockets: a 1992-up unit should have 14. Also compare the outside profile and how it locates in your case. If you are not sure what you have, send us the year and VIN and we will help match it. Every unit we carry for this family is listed on our 46RE parts page.

Install notes

If the flare is on the 3-4 shift instead of on takeoff, this part is not the cause; see our 46RE 3-4 clutch failure guide.


Specifications

Fits46RE 1992
Part typeSprag Clutch
ConditionUsed
BrandOEM
ReferenceA518
ShipsFrom the USA
Warranty1-year

Complete the job: parts that go with this

Doing this repair right usually means replacing these at the same time. Same transmission, ships together.

46RE Overhaul Kit 1990-2003
46RE Overhaul Kit 1990-2003
$118.99
46RE Clutch Drum
46RE Clutch Drum
$83.98

46RE Sprag Clutch 1992: common questions

Is this a complete sprag clutch?

No. It is the used outer race for the low-reverse roller clutch. The rollers, springs and cage are a separate assembly and the inner race is on the low-reverse drum hub.

Will it fit my 1996 Ram 1500 with a 46RE?

The listing covers 1992-up A518 family units, which includes the 46RE. Count 14 roller pockets on your old race and compare the outer profile before you install it.

How do I know the roller clutch is the problem?

If first gear slips in D and 2 but holds in manual 1, the low roller clutch is not holding. A unit that will not go forward in Drive but backs up normally can also have a broken roller clutch.

Does this part affect the overdrive?

No. The overdrive unit has its own roller clutch. This race belongs to the low-reverse overrunning clutch in the main case, which only holds in first gear.

What fluid should I use after installing it?

Use ATF+4. Fill to the dipstick, then check the level again at full operating temperature with the engine idling in Neutral.


Repair guides for this job

Sources
  1. Chrysler — 1998 Dodge Ram Truck Service Manual, Group 21 (46RE/47RE). Roller clutch holds in first only, D/2 versus 1 slip test, no-drive and buzzing diagnosis, drum installation and inspection rules. archive.org/details/98-dodge-ram-truck-sm
  2. GEARS Magazine (ATRA) — Getting to Know the 42-48RE Series Transmissions, Part 1. RE-series layout: hydraulic three-speed geartrain with a separate overdrive unit. atracom.blob.core.windows.net/gears/2006/2006-07/2006_07_22.pdf
  3. Sonnax — Chrysler 46RE transmission unit page. 46RE hard-part and repair part listings by problem area. www.sonnax.com/units/400-46re

46RE Sprag Clutch 1992

$71.66
In stock • ships from the USA • 30-day returns

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