Description
Product Overview
The TCI 225100 Intermediate Kevlar Band is engineered for heavy‑duty automatic transmissions such as the TH400 and 4L80E. Constructed from high‑tenacity Kevlar fibers, the band offers superior tensile strength while remaining lightweight at just 13.6 ounces. Reinforced anchoring points provide added security against stretch and wear, ensuring consistent torque transfer. The machined exterior finish adds durability and resists corrosion, making it suitable for demanding automotive environments. Dimensions of 10.2 x 11.9 x 2.2 inches allow easy handling during installation.
Usage
Designed for vehicle‑specific applications, this band fits a range of trucks and performance cars equipped with TH400 or 4L80E transmissions. It excels in high‑load scenarios such as towing, off‑road driving, and racing, where reliable power delivery is critical. Whether you are a professional technician performing a transmission rebuild or a DIY enthusiast restoring a classic vehicle, the TCI Kevlar Band provides the confidence of a factory‑grade component.

Why Choose Us
TCI is a trusted name in transmission components, known for rigorous testing and quality control. Each band undergoes heat‑treatment and dimensional verification to meet OEM specifications. The reinforced anchors are precision‑engineered to prevent elongation, reducing the risk of premature failure. Our product carries the OEM part number 225100, guaranteeing exact fit and performance parity with the original equipment.
Key Features
- High‑strength Kevlar construction for maximum torque capacity
- Reinforced anchoring points to prevent stretch and slippage
- Machined exterior finish for corrosion resistance
- Vehicle‑specific fit for TH400 and 4L80E transmissions
- OEM part number 225100 ensures exact replacement compatibility
FAQ
Is this band compatible with all TH400 transmissions?
Yes, the TCI 225100 band is designed to fit all standard TH400 applications as well as the 4L80E series, matching OEM specifications.
Can I install the band myself?
Absolutely. The band comes with detailed installation instructions and fits without the need for special tools beyond standard transmission service equipment.
What is the warranty on this product?
TCI offers a limited one‑year warranty covering manufacturing defects and material failures under normal use conditions.
How does Kevlar improve performance compared to traditional steel bands?
Kevlar provides higher tensile strength while being lighter, reducing rotational inertia and improving shift smoothness.
Do I need to replace other transmission components when installing this band?
While not mandatory, it is recommended to inspect related components such as the clutch plates and seals to ensure overall transmission health.






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