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 all 20 results
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48RE Shell A22622B. This shell is .055″ of an inch thicker than a 47RE shell
$ 77.00 Add to cart -
700R4 / 4L60E, heavy duty reaction shell / sun shell 1982-On
$ 39.00 Add to cart -
700R4 4L60E Smart Shell-Heavy Duty Reaction Shell Kit. Sonnax #77749-02K
$ 111.00 Add to cart -
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)
$ 2.00 Add to cart -
A904 A500 Ultra-Lite Sun Shell. #121451
$ 184.00 Add to cart -
BEAST SHELL, 700R4 / 4L60E, REACTION SHELL, 1982-UP THE BEAST, 4 HOLES
$ 79.00 Add to cart -
C-6, C6 Ultra-Lite Sun Shell. #421450
$ 165.00 Add to cart -
New sun gear shell. Fits all 1993 – 2003 38T 4R70W / 75W transmissions with stamped steel reverse drum
$ 82.00 Add to cart -
New sun gear shell. Magnetic Fits all 1993 – 2003 38T 4R70W / 75W transmissions with stamped steel reverse drum
$ 112.00 Add to cart -
RACE, 48RE thrust washer race for the sun gear shell, For 48RE DRIVE SHELL 3.73″OD
$ 6.00 Add to cart -
SHELL, (SONNAX SMART SHELL) 700R4 /4L60E / 4L65E / 4L70E 1982-UP
$ 111.00 Add to cart -
SHELL, 325-4L / 200-4R, 1976-1990 HARDENED SUN GEAR SHELL
$ 20.00 Add to cart -
SHELL, A4LD / 4R55E, DRIVE, LATE 89-UP 4.0 LITER
$ 26.00 Add to cart -
SHELL, E4OD / 4R100, 1989-UP HARDENED
$ 22.00 Add to cart -
Short shell for the C6 wide ratio gear sets. This shell makes it possible to use a wide Alto Power Band
$ 99.00 Add to cart -
SUN GEAR SHELL, 4R75E, 2004-UP 38 TOOTH, NON-MAGNETIC
$ 67.00 Add to cart -
TF727 46RE 47RE Ultra-Light Sun Shell. #121450
$ 165.00 Add to cart -
Ultra-Light C-4 C4 Sun Shell. # 521450 Only1.58 Pounds
$ 143.00 Add to cart -
Used like new sun gear shell. Fits all AOD transmissions. 36 TOOTH
$ 103.00 Add to cart
Showing all 20 results