Boost Valve Kit
Part No. 89010-01K

Low Ratio

Toyota vehicles equipped with an A130, A131, and A140 transaxle may exhibit insufficient line rise in the drive ranges and excessively high pressures in reverse. This may be caused by extreme wear of the boost sleeve. Wear allows TV oil to exhaust through the manual valve in drive ranges, and reverse oil can enter the TV circuit forcing the pressure regulator valve into a high pressure position. The Sonnax boost valve and sleeve kits 89010-01K & 89010-02K will restore the hydraulic integrity of these circuits by preventing cross leakage.

• Sleeves are made from high-quality aluminum for better wear resistance.
• Valves are made of hard-coat anodized aluminum to prevent wear.
• Outperforms the OEM parts

Boost Valve Kit
Part No. 89010-02K

High Ratio

Toyota vehicles equipped with an A130, A131, and A140 transaxle may exhibit insufficient line rise in the drive ranges and excessively high pressures in reverse. This may be caused by extreme wear of the boost sleeve. Wear allows TV oil to exhaust through the manual valve in drive ranges, and reverse oil can enter the TV circuit forcing the pressure regulator valve into a high pressure position. The Sonnax boost valve and sleeve kits 89010-01K & 89010-02K will restore the hydraulic integrity of these circuits by preventing cross leakage.

• Sleeves are made from high-quality aluminum for better wear resistance.
• Valves are made of hard-coat anodized aluminum to prevent wear.
• Outperforms the OEM parts

Oversized Pressure Regulator Valve Kit
Part No. 89010-03K

Replaces .458" long OE large spool design

The continuous oscillation of the pressure regulator valve wears the valve body bore. If severe wear occurs at the balance line circuit, the pressure regulator valve won't stroke to reduce line pressure and feed the converter/lube circuits. This can result in high line pressure, harsh shifts, reduced converter pressure and loss of lube. Severe wear at the other pressure regulator valve circuits can allow line pressure to exhaust or go to sump, resulting in low line pressure, soft shifts, and burned clutches and bands. The Sonnax oversized valves 89010-03K, 89010-04K and 97855-24K allow the valve body to be refurbished to restore proper clearances. See chart to find which part fits your application.

• Oversized, hardened steel valves allow valve body to be refurbished to restore hydraulic integrity.
• One tool kit for all three applications

Toolkit

Part No. 89010-TL

• Reamer
• Reamer Jig
• Bore Sizing Tool