Description
Product Overview
The PARTS-AUTO ZT Manual Transmission Seal is a precision‑engineered component designed to replace OEM seals in a variety of classic American Motors and Ford models. Constructed from high‑grade painted rubber, the seal provides excellent resistance to oil, heat, and wear, ensuring a tight barrier around the shift shaft. It matches the original part number E51121ADNLB1E213456 and meets strict OE standards, delivering a fit that mirrors factory specifications while offering enhanced durability.
Usage
This seal is intended for rear‑mounted manual transmissions in vehicles such as the American Motors Concord (1978‑1979), Ford Fairmont (1978‑1983), and Ford Mustang (1973‑1986). It is ideal for both DIY mechanics and professional technicians performing routine maintenance or addressing oil leaks. The painted exterior not only protects the material but also blends seamlessly with the surrounding transmission housing, maintaining the vehicle’s original aesthetic.

Why Choose Us
Choosing the PARTS-AUTO ZT seal means opting for a product that undergoes rigorous testing to exceed standard OE performance. Our manufacturing process includes reinforced bead design to prevent extrusion and a dual‑layer coating that resists cracking under thermal cycling. Each seal is inspected for dimensional accuracy, guaranteeing a perfect match for the listed vehicle fits. Additionally, our comprehensive compatibility list helps you verify fit before purchase, reducing the risk of returns.
Key Features
- Painted high‑grade rubber for superior oil resistance and visual integration
- Exact OEM dimensions (E51121ADNLB1E213456) for hassle‑free installation
- Reinforced bead design to prevent extrusion and extend service life
- Compatible with a wide range of classic American Motors and Ford models
- Thoroughly tested to meet and exceed original equipment standards
FAQ
What vehicles are compatible with this seal?
The seal fits several American Motors and Ford models, including Concord (1978‑1979), Spirit (1979), Fairmont (1978‑1983), Granada (1981‑1982), LTD (1981‑1983), Mustang (1973‑1986), Merkur Scorpio (1988‑1989), and Merkur XR4Ti (1985‑1989). Please refer to the full compatibility list on the product page for detailed VIN checks.
Is this seal suitable for a DIY replacement?
Yes. The seal is designed for straightforward installation with standard tools. Detailed instructions are included, and the painted surface helps you align the seal correctly without slipping.
How does the painted coating benefit the seal?
The painted coating provides an extra barrier against oil seepage and protects the rubber from UV and chemical exposure, extending the seal’s lifespan compared to uncoated alternatives.
Can I use this seal on a transmission that has been previously repaired?
Absolutely. As long as the transmission housing is clean and free of debris, the seal will install correctly and function as intended, regardless of prior repairs.
What is the warranty on this product?
We offer a 12‑month limited warranty covering manufacturing defects. If the seal fails due to material or workmanship within this period, we will provide a replacement.






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