Skip to product information
A340 AW4 Transmission TCC Lock Up Shift Solenoid Kit 85420-301230 35250-50030

A340 AW4 Transmission TCC Lock Up Shift Solenoid Kit 85420-301230 35250-50030

SKU: ZZ3F09099
$101.19 In Stock
$101.19
Sale price  $101.19 Regular price 
Same day shipping if ordered by 4PM CST.
Part Number(s)
Estimated delivery between
Industrial Retailer parts support representative

Let Northline Parts Do the Heavy Lifting for You!

Not sure which part you need? Our team can help you find the right replacement.

Parts Support Hours: Monday–Friday, 8:00 AM–5:00 PM CT

Live Chat: Available 24/7

I reached out for some replacement head bolts and they responded quickly with a few questions and cautionary information and is sending me some bolts. Great customer service! Thanks

Edward H. — Verified customer

Compatible Models

We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.

Compatible equipment / model

A340 AW4 Transmission TCC Lock Up Shift Solenoid Kit for A340/AW4

This A340 AW4 Transmission TCC Lock Up Shift Solenoid Kit is a direct replacement set that restores proper torque converter clutch engagement and shift timing in A340 and AW4 automatic transmissions, referencing OEM cross-reference numbers 85420-301230 and 35250-50030.

Overview

This A340 AW4 Transmission TCC Lock Up Shift Solenoid Kit includes the essential solenoids that control the torque converter lock-up and shift points for smooth, reliable gear changes. It is designed for transmissions in the A340 and AW4 family, addressing common symptoms like harsh shifting or a shuddering torque converter. This kit replaces worn solenoids to bring back crisp, factory-like shifting for the A340 and AW4 units.

Built For Performance

  • Includes both TCC lock-up and shift solenoids for a complete repair
  • Replicates OEM specifications for a direct fit and reliable operation
  • Constructed with durable materials to withstand heat and transmission fluid
  • Cross-references OEM part numbers 85420-301230 and 35250-50030
  • Helps eliminate erratic shifting and torque converter lock-up issues

Fits These Machines

  • for A340 and AW4 automatic transmissions in select Toyota and Lexus vehicles

On-The-Job Use

  • For transmission repair shops replacing faulty solenoids during overhaul
  • For DIY mechanics rebuilding or servicing an A340 or AW4 unit
  • For restoring proper shift feel in daily driver and performance vehicles

Specs At A Glance

Part Number(s) 85420-301230, 35250-50030
Type TCC Lock Up Shift Solenoid Kit
Compatible Transmission A340, AW4

Good To Know

Q: What does this solenoid kit do? A: It controls hydraulic pressure for torque converter lock-up and gear shifts, which prevents slipping and harsh engagement. Replacing worn solenoids restores smooth and dependable transmission operation.

Q: How do I know this kit fits my transmission? A: Verify your transmission model is an A340 or AW4 and cross-check the OEM numbers 85420-301230 and 35250-50030 against your original parts. This kit is designed to match these factory specifications.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.

Customers also purchased