Description
Product Overview
The Dorman 667-550 turbocharger oil line is engineered as a direct replacement for the original equipment part used in a range of turbocharged engines. Constructed from precision‑machined metal, the line offers superior resistance to pressure, heat, and vibration compared with generic rubber hoses. Measuring 9.4 x 4.3 x 6.7 inches and weighing just one pound, it fits seamlessly into the existing routing without the need for modifications. The part carries the OEM numbers TL109, 8C3Z, and 9T516‑B, guaranteeing compatibility with manufacturers’ specifications. Its robust exterior protects the internal oil passage from external contaminants, ensuring a clean, consistent oil flow to the turbocharger for optimal performance.
Usage
Designed for use in high‑performance and daily‑driver vehicles equipped with turbocharged powerplants, this oil line excels in environments where oil pressure stability is critical. Whether you are restoring a performance vehicle, performing routine maintenance, or addressing a leak in a daily commuter, the Dorman 667-550 provides a reliable solution. It is suitable for both professional automotive technicians and experienced DIY enthusiasts. 
Why Choose Us
Dorman brings over a century of automotive expertise to every component it manufactures. The 667-550 benefits from rigorous quality testing in U.S. facilities, ensuring each line meets or exceeds OEM standards. Our parts are backed by a team of product experts who verify fitment through an extensive database, reducing the risk of mismatched components. In addition, Dorman offers responsive customer support and a straightforward return policy, giving you confidence in your purchase.
Key Features
- Direct OEM replacement – matches factory fit and function for specified models
- Machined metal construction – resists heat, pressure, and fatigue for long service life
- Precise dimensions – 9.4 x 4.3 x 6.7 inches, lightweight at 1 lb for easy handling
- Verified OEM numbers TL109, 8C3Z, 9T516‑B – ensures compatibility with original specifications
- Backed by Dorman’s U.S. engineering team and century‑long automotive experience
FAQ
Is this oil line compatible with my vehicle?
Use Dorman’s garage tool by entering your vehicle’s make, model, and trim to confirm fitment. The part is listed for a range of turbocharged engines that originally used OEM part numbers TL109, 8C3Z, or 9T516‑B.
What material is the oil line made from?
The line features a machined metal exterior with a sealed internal passage designed to handle high‑temperature oil flow typical of turbocharged applications.
Can I install this part myself?
Yes. The line is a bolt‑on replacement that requires standard hand tools. Follow the included installation guide or consult a professional if you are unfamiliar with turbocharger oil circuits.
Does Dorman offer a warranty on this product?
All Dorman parts come with a limited warranty that covers manufacturing defects. Specific warranty terms are detailed on the product page and in the accompanying documentation.
How does this oil line improve engine performance?
By providing a leak‑free, pressure‑stable oil path to the turbocharger, the line helps maintain proper lubrication, reduces the risk of oil starvation, and supports consistent boost pressure, which together contribute to smoother engine operation.





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