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SKU:105740-20K
Suncoast Oversized Main Pressure Regulator Valve Kit
Suncoast Oversized Main Pressure Regulator Valve Kit

Description
Wear in the main pressure regulator bore and on the outboard spool area of the valve is common in listed GM and Ford 10-speed RWD transmissions. This wear minimizes line pressure control, resulting in delayed shift engagement, poor shift quality and burnt clutches.
Reconditioning the bore and installing Sonnax oversized main pressure regulator valve kit 105740-20K eliminates the leakage of line pressure signal oil to exhaust with the incorporation of an extended front valve spool. This valve spool is 270% longer than the OE spool, allowing for better sealing contact and a more stable operating valve. The O-ringed end plug provides a positive seal and prevents critical signal fluid from leaking to exhaust. Both of these Sonnax features ensure your units will have proper line pressure control through all drive ranges.
- Extended outboard spool is 270% longer than OE, allowing greater sealing ability and valve stability
- O-Ringed end plug provides positive seal to prevent critical signal fluid from leaking to exhaust
- Hardcoat anodized aluminum valve combats premature wear
- Annular grooves help center the valve in the bore to reduce future side-load wear
- Included are two new springs that restore OE pressure specifications
Fitments
2025 Ford F-250 Super Duty
2025 Ford F-350 Super Duty
2025 Ford F-450 Super Duty
2025 Ford F-550 Super Duty
2024 Ford F-250 Super Duty
2024 Ford F-350 Super Duty
2024 Ford F-450 Super Duty
2024 Ford F-550 Super Duty
2023 Ford F-250 Super Duty
2023 Ford F-350 Super Duty
2023 Ford F-450 Super Duty
2023 Ford F-550 Super Duty
2022 Ford F-250 Super Duty
2022 Ford F-350 Super Duty
2022 Ford F-450 Super Duty
2022 Ford F-550 Super Duty
2021 Ford F-250 Super Duty
2021 Ford F-350 Super Duty
2021 Ford F-450 Super Duty
2021 Ford F-550 Super Duty
2020 Ford F-250 Super Duty
2020 Ford F-350 Super Duty
2020 Ford F-450 Super Duty
2020 Ford F-550 Super Duty
2025 Ford Bronco
2025 Ford Explorer
2025 Ford Mustang
2025 Ford Ranger
2025 Lincoln Aviator
2024 Ford Bronco
2024 Ford Explorer
2024 Ford Mustang
2024 Ford Ranger
2024 Lincoln Aviator
2023 Ford Bronco
2023 Ford Explorer
2023 Ford F-150
2023 Ford Mustang
2023 Ford Ranger
2023 Lincoln Aviator
2022 Ford Bronco
2022 Ford Explorer
2022 Ford F-150
2022 Ford Mustang
2022 Ford Ranger
2022 Lincoln Aviator
2021 Ford Bronco
2021 Ford Expedition
2021 Ford Explorer
2021 Ford F-150
2021 Ford Mustang
2021 Ford Ranger
2021 Lincoln Aviator
2021 Lincoln Navigator
2020 Cadillac Escalade
2020 Chevrolet Suburban
2020 Chevrolet Tahoe
2020 Ford Expedition
2020 Ford Explorer
2020 Ford F-150
2020 Ford Mustang
2020 Ford Ranger
2020 GMC Yukon
2020 Lincoln Aviator
2020 Lincoln Navigator
2019 Cadillac Escalade
2019 Chevrolet Camaro
2019 Chevrolet Sierra 1500
2019 Chevrolet Silverado 1500
2019 Chevrolet Suburban
2019 Chevrolet Tahoe
2019 Ford Expedition
2019 Ford F-150
2019 Ford Mustang
2019 Ford Ranger
2019 GMC Yukon
2019 Lincoln Navigator
2018 Cadillac Escalade
2018 Chevrolet Camaro
2018 Chevrolet Suburban
2018 Chevrolet Tahoe
2018 Ford Expedition
2018 Ford F-150
2018 Ford Mustang
2018 GMC Yukon
2018 Lincoln Navigator
2017 Chevrolet Camaro
2017 Ford F-150
Instructions
Specifications
SKU: 105740-20K
GTIN: 840385619721
Manufacture Name: Suncoast Performance
Shipping Weight: 1 lb
Shipping Length: 4 in
Shipping Width: 4 in
Shipping Height: 4 in
EO Number:
Cross Reference #
Warranty
California Proposition 65 Warning
California Proposition 65 Warning - P65warnings.ca.gov
105740-20K
Suncoast Oversized Main Pressure Regulator Valve Kit
Wear in the main pressure regulator bore and on the outboard spool area of the valve is common in listed GM and Ford 10-speed RWD transmissions. This wear minimizes line pressure control, resulting in delayed shift engagement, poor shift quality and burnt clutches.
Reconditioning the bore and installing Sonnax oversized main pressure regulator valve kit 105740-20K eliminates the leakage of line pressure signal oil to exhaust with the incorporation of an extended front valve spool. This valve spool is 270% longer than the OE spool, allowing for better sealing contact and a more stable operating valve. The O-ringed end plug provides a positive seal and prevents critical signal fluid from leaking to exhaust. Both of these Sonnax features ensure your units will have proper line pressure control through all drive ranges.
- Extended outboard spool is 270% longer than OE, allowing greater sealing ability and valve stability
- O-Ringed end plug provides positive seal to prevent critical signal fluid from leaking to exhaust
- Hardcoat anodized aluminum valve combats premature wear
- Annular grooves help center the valve in the bore to reduce future side-load wear
- Included are two new springs that restore OE pressure specifications
Suncoast Oversized Main Pressure Regulator Valve Kit