A common problem in GM 200-4R and 4L60 transmissions is burned bands and/or 3-4 clutches. This failure can be reduced by eliminating throttle boost oil leaka
Sonnax GM 4L60 Transmission
Brand: SonnaxInterchange Part Number: S74741EKManufacturer Warranty: YesFitment Type: Direct ReplacementItems Included: Accumulator Valve Kit M
Sonnax 77777M-K 4L60E 4L60 200R4 Transmission Accumulator Valve Kit M Style
Sonnax Boost Valve Kit - 36946-04K
48RE Sonnax Sure Cure Valve Body Kit Complete SC-48RE (03-10) - Trans Parts Direct
Page 67 - Transtar_PartNumberingGuide
200-4R Boost Valve & Sleeve - Cobra Transmission
Sonnax Boost Valve Kit - 77898E-14K
Sonnax GM 200-4R Transmission
NEW. 500 boost valve for the 700-R4 (4L60) and 200-4R. This valve will not fit the 4L60E. If you're looking for a boost valve for that transmission I
700R4 .500 TV Boost Valve & Sleeve Sonnax 2004R 700-R4 200-4R 4L60 Transmission
Sonnax Oversized Pressure Regulator Valve - 77917-07
Sonnax 22771-03K Transmission Throttle Valve Kit 48RE A500 A518 A618 0 — MaxxIndustries
L2theW 700R4 Transmission Assembly - Part 5, The Input Housing, Raybestos 3-4 Z-Pak Clutch Setup
Sonnax
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Sonnax 200-4R 4L60 TV Boost Valve Kit (#77917-500)