ATP Parts ZA-503 Automatic Transmission Ring Gear

Overview of ATP Parts Automatic Transmission Ring Gear ZA-503

The ATP Parts Automatic Transmission Ring Gear ZA-503 is engineered for reliable performance in select Ford and Mercury vehicles. Designed with precise dimensions and tooth count, this transmission hard part ensures proper engagement and durability in automatic transmissions.

• Inside Diameter: 12.025 inches
• Outside Diameter: 13.294 inches
• Thickness: 0.365 inches
• Tooth Quantity: 157 teeth
• Pitch Flywheels: 12/14
• Ring Gear Chamfer: None

Detailed Product Description and Specifications

This ATP Parts ring gear, part number ZA-503, is manufactured to meet the exact specifications required for smooth operation in automatic transmissions. The 157-tooth count and precise inside and outside diameters (12.025 inches and 13.294 inches respectively) provide accurate meshing with the transmission components. With a thickness of 0.365 inches, the ring gear offers the necessary strength and stability for transmission torque transfer. The 12/14 pitch flywheels ensure compatibility with the corresponding flywheel teeth, while the absence of a chamfer on the ring gear maintains consistent contact surfaces.

Compatible Vehicles and Applications

This automatic transmission ring gear is compatible with a range of Ford and Mercury models, including:

• Ford Bronco, F-100, F-150, F-250, F-350
• Ford Mustang, Thunderbird, Fairmont, Montego
• Ford E-Series Econoline vans: E-100, E-150, E-250, E-350 and their Club Wagon variants
• Mercury Capri, Colony Park, Cougar, Grand Marquis, LTD, LTD Crown Victoria, Marquis, Monarch, Villager, Zephyr

Use of the ATP Parts ZA-503 ring gear ensures proper fitment and function in these specific models’ automatic transmissions.

Common Issues Addressed by the ATP Parts ZA-503 Ring Gear

• Worn or damaged ring gear teeth causing transmission slippage or noise
• Incorrect gear engagement leading to shifting problems
• Excessive wear from heat or mechanical stress in the transmission
• Replacement during transmission rebuilds or overhauls
• Restoring proper torque transfer and drivetrain performance

Installation Notes and Tips

• Ensure the ring gear matches the transmission model and tooth count before installation
• Inspect mating components such as the flywheel and pinion gear for wear
• Use proper torque specifications when securing the ring gear to avoid distortion
• Check for correct alignment to prevent premature wear or noise
• Consult vehicle service manuals for detailed installation procedures

Quality Assurance and Warranty Information

ATP Parts manufactures the ZA-503 ring gear to meet industry standards for durability and performance. Each part undergoes quality control inspections to ensure dimensional accuracy and material integrity. While specific warranty details may vary, ATP Parts typically offers limited warranties covering defects in materials and workmanship. Refer to ATP Parts documentation for exact warranty terms.