Description
Product Overview
The National Transfer Case Output Shaft Seal (model 711139) is engineered for durability and precision. Constructed from a machined exterior, the seal features a spring‑loaded design that maintains consistent pressure on the shaft, preventing fluid leaks even under extreme temperature fluctuations ranging from -40°F to 400°F. Weighing just 1.58 ounces and measuring 3 x 1 x 3 inches, it offers a compact footprint without compromising strength. This OEM‑compatible part replaces the original seal in a variety of Ford models, ensuring a seamless fit and reliable performance.
Usage
Designed for the demanding environments of police interceptors and utility vehicles, this seal excels in both daily commuting and high‑intensity duty cycles. Whether navigating city streets, off‑road terrain, or extreme weather, the seal’s temperature tolerance and spring‑loaded mechanism keep the transfer case protected from contaminants and fluid loss. Ideal for fleet maintenance, aftermarket upgrades, and DIY repairs, it serves professional mechanics and vehicle owners alike.
Why Choose Us
National brings decades of automotive expertise, and this seal reflects that heritage. Each unit undergoes rigorous quality testing to meet or exceed OEM specifications, guaranteeing a leak‑free seal that endures high heat and vibration. The spring‑loaded design eliminates the need for additional torque adjustments, simplifying installation and reducing labor time. Backed by a strong customer rating of 4.8 out of 5 stars, the product demonstrates consistent satisfaction across a broad user base.
Key Features
- Spring‑loaded design ensures constant sealing pressure for leak‑free operation.
- Machined exterior provides precise fit for 2013‑2019 Ford Police Interceptor and 2007‑2018 Ford Edge models.
- Temperature resistance from -40°F to 400°F protects against extreme heat and cold.
- Lightweight (1.58 oz) and compact dimensions simplify handling and storage.
- High customer rating (4.8/5) reflects reliability and performance in real‑world conditions.
FAQ
Will this seal fit a 2015 Ford Police Interceptor Utility?
Yes. The National 711139 seal is compatible with 2013‑2019 Ford Police Interceptor Utility models, including the 2015 year.
Do I need special tools to install the spring‑loaded seal?
No special tools are required. The spring‑loaded mechanism allows a straightforward press‑fit installation using standard seal drivers.
Can the seal handle aftermarket transmission fluids?
The seal is designed to work with standard OEM and most aftermarket transmission fluids. Always verify fluid compatibility if using specialty formulations.
What is the warranty coverage for this product?
National offers a limited one‑year warranty against manufacturing defects. Contact the seller with proof of purchase for warranty service.
Is this seal suitable for high‑performance off‑road use?
Absolutely. Its high temperature rating and robust spring‑loaded design make it ideal for off‑road conditions where heat and vibration are common.
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