Boost Valve Kit TH350, TH350C

Name: Boost Valve Kit TH350, TH350C
Brand: SONNAX
SKU: 852-35754-01K
Price: 114.36 USD
Availability: InStock

^$114³⁶

Ships on 09/09/2026

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Boost Valve Kits

Boost Valve Kit

TH350, TH350C

Sleeve
Reverse & Modulator Boost Valve
Intermediate Boost Valve

The OE boost valve sleeve wears out from the reciprocation of the steel valve within the aluminum sleeve. Wear in the reverse boost sleeve results in low line pressure, soft 1-2 and 2-3 shifts and/or reverse engagement or shudder. Sonnax offers 35754-01K, a high performance boost valve and sleeve replacement. This high performance boost valve and sleeve incorporates a larger boost ratio, which increases line pressure and provides firmer shifts. It is also recommended for street/strip performance vehicles.

Redesigned sleeve prevents sticking
Larger boost ratio
No machining required

Part TypeAutomatic Transmission Reverse Boost Valve

BrandSONNAX

Package Height1.0

Package Width1.0

Package Length2.25

Weight0.14 PG

Part CategoryReplacement Parts

Part FitmentSemi Universal

Vendor Part Number35754-01K

Package Qty1

Package TypeEA

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Please click here to download the instructions PDF file

Some parts are not legal for use in California or other states with similar laws / regulations

Boost Valve Kit TH350, TH350C

⚠️ Warning

Motor Vehicles

Tools

Electrical Cords