Pioneer Cables 747008 Automatic Transmission Modulator Valve

Automatic Transmission Modulator Valve for Ford and Mazda

Pioneer Cables 747008 is an automatic transmission modulator valve for select Ford, Mercury, Chevrolet, and Mazda applications. It is an exact-fit replacement part for vehicles that use a vacuum modulator to help regulate transmission shift timing and line pressure.

• Automatic transmission modulator valve replacement
• Exact-fit replacement from Pioneer Transmission Components
• Compatible with select Ford Mustang, Ranger, Explorer, and Aerostar applications
• Also used on select Mazda B-Series trucks and Navajo models
• No gasket or seal included

Fitment Details

Compatible with 1975-1995 Ford, Mercury, Chevrolet, and Mazda vehicles listed below. Fits 1985-1994 Ford Ranger, N/A; Fits 1991-1994 Ford Explorer, N/A; Fits 1986-1995 Ford Aerostar, N/A; Fits 1987-1993 Ford Mustang, N/A; Fits 1991-1994 Mazda Navajo, N/A; Fits 1994 Mazda B2300, N/A; Fits 1994 Mazda B3000, N/A; Fits 1994 Mazda B4000, N/A.

• Fits 1986-1995 Ford Aerostar, N/A - ADJ 7.5-10, EDA 1.03, orifice restricted .045, no stripe
• Fits 1991-1994 Ford Explorer, N/A - ADJ 7.5-10, EDA 1.03, orifice restricted .045, no stripe
• Fits 1985-1994 Ford Ranger, N/A - ADJ 7.5-10, EDA 1.03, orifice restricted .045, no stripe
• Fits 1994 Mazda B2300, N/A - ADJ 7.5-10, EDA 1.03, orifice restricted .045, no stripe
• Fits 1994 Mazda B3000, N/A - ADJ 7.5-10, EDA 1.03, orifice restricted .045, no stripe
• Fits 1994 Mazda B4000, N/A - ADJ 7.5-10, EDA 1.03, orifice restricted .045, no stripe
• Fits 1991-1994 Mazda Navajo, N/A - ADJ 7.5-10, EDA 1.03, orifice restricted .045, no stripe
• Fits 1987-1993 Ford Mustang, N/A - ADJ 7.5-10, EDA 1.03, orifice restricted .045, no stripe
• Fits 1985-1990 Ford Bronco II, N/A - ADJ 7.5-10, EDA 1.03, orifice restricted .045, no stripe
• Fits 1987-1988 Ford Thunderbird, N/A - ADJ 7.5-10, EDA 1.03, orifice restricted .045, no stripe
• Fits 1983-1986 Ford Mustang, N/A
• Fits 1983-1986 Mercury Capri, N/A
• Fits 1983-1985 Mercury Marquis, N/A
• Fits 1983 Ford Fairmont, N/A
• Fits 1983 Mercury Zephyr, N/A
• Fits 1982 Chevrolet K5 Blazer, N/A - ADJ 12.5-18, EDA 1.75, Red Stripe, w/o EGR
• Fits 1982 Ford Fairmont, N/A - Single Area Diaphragm
• Fits 1980-1982 Ford Mustang, N/A - Single Area Diaphragm
• Fits 1980-1982 Mercury Capri, N/A - Single Area Diaphragm
• Fits 1980-1982 Mercury Zephyr, N/A - Single Area Diaphragm
• Fits 1981 Mercury Cougar, N/A
• Fits 1980 Ford Pinto, N/A - Single Area Diaphragm
• Fits 1980 Mercury Bobcat, N/A - Single Area Diaphragm
• Fits 1978-1979 Ford Fairmont, N/A - 1-Hose Connection
• Fits 1979 Ford Mustang, N/A - 1-Hose Connection
• Fits 1975-1979 Ford Pinto, N/A - 1-Hose Connection
• Fits 1975-1979 Mercury Bobcat, N/A - 1-Hose Connection
• Fits 1979 Mercury Capri, N/A - 1-Hose Connection
• Fits 1977 Mercury Capri, N/A - 1-Hose Connection
• Fits 1978-1979 Mercury Zephyr, N/A - 1-Hose Connection

Common Repair Uses

• Restores proper vacuum-modulated transmission shift control
• Addresses delayed or inconsistent shift behavior
• Replaces a leaking or worn modulator valve
• Helps correct transmission operation on older Ford and Mazda platforms
• Supports service on vehicles with the listed hose and diaphragm configurations

Installation Notes

Verify the transmission modulator style, hose connection, diaphragm type, and calibration notes before installation. This part number 747008 does not include a gasket or seal, so reuse or replacement of sealing components must be handled separately as needed. For cross-reference research, this part matches Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Quality Assurance

Pioneer Transmission Components are built as exact-fit replacement parts for transmission service applications. Part number 747008 is cataloged for direct replacement use on the listed Ford, Mercury, Chevrolet, and Mazda vehicles.