Shells
PATC Sells Transmission Sun Shells, Sonnax Smart Shell, Beast Shell. We have heavy duty TCS sun gear shells and more.
In GM 4L60, 4L60-E, 4L65-E and 4L70-E units, bulky aftermarket shells always fall short when splines continue to strip and the shells break under stress. A chronic problem with both OE and thicker aftermarket shells is failure of the rear planetary bearing. From daily jobs to extreme builds, the Sonnax SmartShell heavy-duty reaction shell kit 77749-02K is the only way to prevent shell failure AND protect the bearing.
The SmartShell avoids the weight found in traditional, heavy-duty aftermarket shells thanks to a unique combination of improved design and manufacturing for a super strength shell that’s only slightly bulkier than OE. To prevent thrust loads from overwhelming the captured planetary bearing, the SmartShell features a larger bearing and custom roller clutch race. These parts re-route thrust loads through the carrier, completely bypassing the delicate bearing.
- Stops spline stripping
- Prevents hub breakage
- Eliminates planetary bearing failure
Bulky aftermarket shells always fall short when splines continue to strip and the shells break under stress. A chronic problem with both OE and thicker aftermarket shells is failure of the rear planetary bearing. From your daily jobs to extreme builds, the patented SmartShell is the only way to prevent shell failure AND protect the bearing.
This Sonnax video takes you inside the sun gear shell to see the source of common failures and learn how only the SmartShell can stop them all.
Showing 1–16 of 23 results
-
200-4R, 325-4L HARDENED SUN GEAR SHELL 1976-1990
$ 32.00 Add to cart -
48RE Shell A22622B. This shell is .055″ of an inch thicker than a 47RE shell
$ 102.00 Add to cart -
48RE thrust washer race for the sun gear shell, For 48RE DRIVE SHELL 3.73″OD
$ 10.00 Add to cart -
6L80E Drive Shells with Tig Welded Shafts
$ 369.00 Add to cart -
6L90E Drive Shells with Welded Shafts
$ 359.00 Read more -
700R4 / 4L60E heavy duty reaction sun shell 1982-On
$ 62.00 Read more -
700R4 4L60E Monster Heavy Duty Sun Shell with Heat Treated Splines
$ 45.00 Add to cart -
700R4 4L60E Smart Shell-Heavy Duty Reaction Shell Kit. Sonnax 77749-02K
$ 129.00 Read more -
727 Weight Loss Kit, The 727 Lean & Mean Weight Reduction Combo Special. #K727C
$ 932.00 Add to cart -
74241A Special Beast Shell Plastic Thrust Washer for 700R4 / 4L60E (washer only)
$ 2.25 Add to cart -
AOD Used Like New 36 Tooth Sun Gear Shell. Fits all 1980-1990 AOD Transmissions.
$ 99.00 Add to cart -
BEAST SHELL, 700R4 / 4L60E, REACTION SHELL, 1982-UP THE BEAST, 4 HOLES
$ 69.00 Read more -
C-4 C4 Ultra Light Sun Shell Weights Only 1.58 Pounds Number 521450
$ 280.00 Read more -
C-6, C6 Ultra-Lite Sun Shell. # 421450
$ 180.00 Add to cart -
E4OD / 4R100 SHELL, 1989-UP HARDENED
$ 41.00 Read more -
New sun gear shell. Fits all 2004 – 2014 38T 4R70W / 4R75W transmissions with stamped steel reverse drum
$ 120.00 Add to cart
Showing 1–16 of 23 results