Sonnax 4L60 4L60E 4L65-E & 4L70-E Pinless Accumulator Piston Kit
Product ID: 305826983
🔩Pinless design eliminates leakage
⚙️Steel balls plug pin bore securely
🛡️Dual seals for airtight bore stability
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⚙️ Upgrade your shift game with leak-proof precision!
The Sonnax 4L60/4L60E/4L65-E & 4L70-E Pinless Accumulator Piston Kit features a patented pinless design with dual seals and steel ball plugs to eliminate pin bore leakage and piston wear. This kit improves shift quality, prevents burnt clutches and bands, and extends transmission life by stabilizing the piston and sealing the bore. Compatible with GM 4L60-E series transmissions, it’s a reliable OEM upgrade trusted by professionals.
| ASIN | B00BCN9Z5A |
| Brand | Sonnax |
| Customer Reviews | 4.7 4.7 out of 5 stars (521) |
| Date First Available | 18 March 2021 |
| Item Weight | 50 g |
| Item model number | WO161131 |
| Manufacturer | Sonnax |
| Manufacturer Part Number | 77998-03K |
| OEM Part Number | 62-77998-03K |
| Package Dimensions | 21.01 x 12.7 x 2.79 cm; 50 g |
N**O
funciona según lo esperado
mejoro la transmisión recomiendo su uso es fácil de instalar lo pude yo mismo y no soy mecánico
R**N
Great Upgrade!!
My 1-2 Shift at light acceleration was harsh. It felt like I had a shift kit. After doing a lot of research, I figured I give this a try. To my surprise, it fixed the issue. It shifts so smooth from 1-2 now. Install wasn't too bad and I highly recommend.
C**S
Firm shift
Easy instal and works great. Really firms up the shift.
B**J
G.M. SHAME on You
Great Product The Factory OEM ..Accumulators are made of PLASTIC.. the GENERAL MOTORS "ENGINEERS" must Hate America Because .. If anyone purposely designs A "Plastic" Product that is Deep in the internals of A Transmission ..with Extreme Heat and Constant Movement EVERY TIME THE TRANSMISSION SHIFTS.. MUST KNOW THAT THE TRANSMISSION WILL FAIL.. AND That Will Cost Americans .. THOUSANDS OF DOLLARS IN REPAIRS... G.M. ..WHY WOULD YOU DO THIS TO FELLOW AMERICANS? SHAME ON YOU..!!! GENERAL MOTORS .. SHAME ON YOU !!
A**R
1-2 rough shift, 2-3 sloppy FIXED
Not sure how or why, but this fixed the 1-2 Rough shift and 2-3 weak/sloppy shift in my 2003 Sierra 1500 with the 4L60e. It drives like a new truck. It will take a decent amount of experience to DIY this. I’m no transmission builder, but if you got some buddies and a hoist, it’s a breeze. Do lots of research on youtube on how to do the job before attempting. The trans pan must be dropped to do the job. Great product.
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