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4L60E 700R4 OD Superior Super Servo 4L65E 4L70E 700-R4 Billet 4th Overdrive Gear Apply Piston Cover

OPT Product Code: SUP-K034
(4.6) Reviews: 5
4L60E 700R4 OD Superior Super Servo 4L65E 4L70E 700-R4 Billet 4th Overdrive Gear Apply Piston Cover

Product Details

Superior Transmission Parts billet overdrive Super Servo for the GM 700R4, 4L60, 4L60E, 4L65E, 4L70E, 4L75E THM700-R4 MD8

Part number: K034

This billet aluminum Super Servo is the 4th Gear apply piston & outer cover. This upgrade gives you better holding capacity in 4th gear. Firmer 3-4 shifts and more positive 4-3 down shifts. This servo utilizes a lip seal design on the piston for less fluid blow-by or leakage. The servo also provides proper 4-3 band release for no drag.

This servo is a must for any performance, towing, RV, or off-road transmission, but would be a nice upgrade for any 700-R4 or 4L60E.

This billet OD servo can be combined with the Corvette servo for even greater performance. These servo upgrades are the best changes you can make to your 700R4, 4L60E, 4L65E, or 4L70E automatic transmission. Installing this servo in lower mileage vehicles can add years to your transmission’s life. Higher mile transmissions can also benefit and help to postpone a costly rebuild.

This servo is easy to install and can be done with the transmission in the vehicle.

The recommended servo travel is 1/16”-1/8”. We are finding that when using the billet overdrive servo, this correct travel range is crucial. Any travel over 1/8” can create a situation of no overdrive gear. The long servo pin option on this item can help to get this travel within the correct range. The closer you can get to 1/16” travel the better.  The up and downshifts will be even quicker and can add more miles and years to your transmission’s life.

The kit comes with all of the necessary seals for installation including the outer cover o-ring.

This servo works in all makes of this transmission. GM, Cadillac, Chevrolet, GMC, Pontiac, Oldsmobile, Hummer, Isuzu, Saab, including:

  • Astro Van 1985-2005
  • Avalanche 2002-2008
  • Blazer 1982-2005
  • Bravada 1991-2004
  • Brougham 1994-1997
  • Camaro 1982-2002
  • Canyon 2004-2012
  • Caprice 1982-1996 (With optional 700R4)
  • Colorado 1994-2012
  • Corvette 1982-2005
  • Custom Cruiser Wagon 1991-1992 (With optional 700R4)
  • Envoy - XUV - Denali 2001-2010
  • Firebird & Trans Am 1983-2002
  • Fleetwood 1994-1997
  • GTO 2004-2006
  • Hummer H2 2003-2007
  • Hummer H3 2006-2011
  • Impala SS 1994-1996
  • Isuzu Ascender 2003-2009
  • Isuzu Hombre 1996-2000
  • Isuzu Pickup, I280, I350, I290, I370 2006-2009
  • Rainier 2004-2007
  • Roadmaster 1992-1996
  • SAAB 9-7 2005-2009
  • Safari Van 1985-2005
  • Sierra Pickup 1982-2013
  • Silverado Pickup 1982-2013
  • SSR 2003-2007
  • Suburban 1982-2013
  • Syclone 1991-1993
  • Tahoe 1993-2013
  • Trailblazer 2001-2009
  • Typhoon 1991-1993
  • GMC & Chevy Van 1983-2013
  • Yukon 1993-2013

These transmissions are part of the Turbo-Hydramatic series and are also known as: 700R4, 4L60, 700-R4, TH700-R4, MD8, THM700R4, THM700-R4, 4L60E, 4L60-E, 4L65E, 4L65-E, 4L70E, 4L70-E, 4L75E, 4L75-E, M30, M32, M70.

The K034 Superior Super Servo works in all models and years of transmission, including: 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, and 2013.

4L60E 700R4 OD Superior Super Servo 4L65E 4L70E 700-R4 Billet 4th Overdrive Gear Apply Piston Cover

OPT Product Code: SUP-K034

(4.6) Reviews: 5
10 In Stock
Please review all options below choosing "Add to Cart".
700R4 Results
I installed the overdrive Super Servo kit with the Corvette servo in my S10 Blazer with a 350 and 700R4. It was a bit tight underneath with that configuration, but the installation went smoothly. It definitely firmed-up the 1-2 shift, the 2-3 was slightly better, and the 3-4 was about the same as before. It wasn't quite the positive engagement that I was expecting. I was very careful about the OD piston seal direction and the free play was 3/32". It wasn't quite the magic I was hoping for, but I feel more confident about my potential transmission longevity, now.
Verified Buyer
4 of 6 customers found this helpful.
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Corvette/Super Servo
The vette servo made a big difference in the 1-2 shift. You can can the difference in the 3-4 shift as well. Also fast shipping.
Verified Buyer
2 of 2 customers found this helpful.
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Quality parts, take your time with the snap ring in reinstall.
Parts are very high quality, very happy with the performance. The instructions could be clearer, and be warned. If you don’t get the snap ring back in perfectly, it can slip out and break the side of the servo bore out. I have that problem but I was able to fix it. Some may not be so lucky, OPT should put a warning in the instructions
Jack Ewashko
Verified Buyer
3 of 3 customers found this helpful.
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Servo kit and 2nd gear servo
Parts fit and easy to install. Fast shipping and great support when placing order. Definitely recommended. Sadly this did not fix our problem and have to replace the transmission.
Verified Buyer
2 of 2 customers found this helpful.
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Verified Buyer
18 of 19 customers found this helpful.
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