INA ZC-78521T-9R Engine Timing Set

INA Timing Chain Kit for Ford V8 Applications

INA timing chain kit ZC-78521T-9R is built for engine timing service on a wide range of Ford, Lincoln, and Mercury vehicles. It brings together the core timing components needed for a complete repair, including chains, tensioners, and guides.

For Ford Mustang, Ford F-150, and Mercury Cougar timing chain replacement, this kit supports a proper engine timing service with matched components in one package.

Key Features

• INA engine timing set for valve train service
• Includes chains, tensioners, and guides
• Some applications also include gears and sprockets
• Includes a high-performance chain additive formulated for Schaeffler by Liqui Moly in certain applications
• Part number: ZC-78521T-9R

Detailed Description

INA ZC-78521T-9R is an engine timing set for vehicles that require a complete timing chain repair. The kit is assembled to cover the essential wear items in the timing drive, helping restore correct camshaft and crankshaft synchronization during service. In select applications, the kit also includes gears and sprockets, along with a specially formulated chain additive that reduces friction during break-in and lowers run-in wear.

This part cross-references 5591353100 for the same application. It is a direct-fit timing service solution for many Ford, Lincoln, and Mercury models, including Ford Bronco, Ford LTD, and Mercury Marquis applications.

What It Helps Fix

• Timing chain stretch or noise
• Worn tensioners or guides
• Incorrect valve timing from timing drive wear
• Rattle on startup from timing component wear
• Service needs during a complete engine timing repair

Installation Notes and Tips

Verify engine code, timing cover configuration, and existing timing component layout before installation. Replace related wear parts during timing service and follow factory timing marks and torque procedures exactly. Because fitment spans multiple Ford, Lincoln, and Mercury platforms, confirm the vehicle application against the part number ZC-78521T-9R before assembly.

Quality Assurance

INA timing chain kits are packaged to support a complete timing repair with the required core components in one kit. The included chain additive in select applications is formulated to reduce break-in friction and wear during initial operation.

• Fits 1978-1982 Ford Bronco, N/A
• Fits 1980-1982 Ford E-250 Econoline Club Wagon, N/A
• Fits 1980-1982 Ford E-350 Econoline, N/A
• Fits 1980-1982 Ford E-350 Econoline Club Wagon, N/A
• Fits 1977-1982 Ford F-250, N/A
• Fits 1977-1982 Ford F-350, N/A
• Fits 1980-1981 Ford E-250 Econoline, N/A
• Fits 1980 Ford E-100 Econoline, N/A
• Fits 1977-1979 Ford F-100, N/A
• Fits 1977-1979 Ford F-150, N/A
• Fits 1971-1979 Ford LTD, N/A
• Fits 1977-1979 Ford Thunderbird, N/A
• Fits 1972 Ford Thunderbird, N/A
• Fits 1977-1979 Lincoln Continental, N/A
• Fits 1970-1979 Mercury Cougar, N/A
• Fits 1975-1979 Mercury Grand Marquis, N/A
• Fits 1971-1979 Mercury Marquis, N/A
• Fits 1975-1977 Mercury Monarch, N/A
• Fits 1970-1976 Mercury Montego, N/A
• Fits 1971-1974 Mercury Colony Park, N/A
• Fits 1970-1973 Ford Mustang, N/A