Granatelli
Granatelli Union Sleeve, 3.5" (89mm) – 318535U
Granatelli Union Sleeve, 3.5" (89mm) – 318535U
Part number: 318535U
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Granatelli Union Sleeve, 3.5". Highlights include ensures leak-free sealing under high pressure and optimizes connection reliability for critical systems. Thread type and size must match on both sides; AN, NPT and metric threads do not mix. Part number: 318535U.
Key features
- Precision Fit for 3.5" Hoses and Tubing
- The 318535U Union Sleeve is specifically made to fit 3.5" (89mm) hoses and tubing, providing a tight, secure connection that maintains system integrity and prevents leaks in high-performance setups
- Custom-fit for 3.5" (89mm) hoses and tubing
- Ensures leak-free sealing under high pressure
- Optimizes connection reliability for critical systems
- Handles high engine bay temperatures with ease
- Maintains long-lasting performance in high-pressure systems
- Supports racing and high-performance vehicle builds
Specifications
- Brand: Granatelli
- Part type: Fitting
- Part number: 318535U
Fitment
This listing does not name specific vehicles. Match the part number and the specifications with the part you are replacing.
What it does
Fittings and hardware connect lines, hoses and parts securely. The right fitting, thread and size keeps a connection sealed and secure, which matters most on fuel, oil, coolant and brake lines.
Installation & tips
- Confirm thread type and size on both sides, and use the right sealant or none as the fitting type requires.
- Hose: Match hose size to the fitting.
- Put the new part next to the old one and compare the shape, mounting points and connections before you install it.
- Work on a cool engine with the vehicle secured, and use a service manual for your vehicle for torque specs and procedures.
FAQ
What is the part number of this fitting?
318535U (Granatelli). Compare it with the number on your old part or in your parts catalog.
Can I install it myself?
Many owners do this job at home with basic tools and a service manual for their vehicle. If you are not sure, have it fitted by a qualified mechanic.
What should I check before ordering?
Compare the part number, specifications and fitment on this page with your vehicle and with the part you are replacing.
Before you order
- Compare part number 318535U with your original part.

Granatelli fitting or hardware: what to know
Thread type and size must match on both sides; AN, NPT and metric threads do not mix.
Fitment notes
- Specs, lead time and warranty come from Granatelli and can change. The details above this guide are the latest we have.
Not sure it fits? Tell us exactly what you drive and we'll confirm fitment first. It's free and saves a return.
Ask about fitmentWhat else to plan for
- Hose. Match hose size to the fitting.
More for your car: Fuel & air intake
Questions about fitting or hardware
Will this fit my car?
Does it need thread sealant?
Where do specs and warranty details come from?
Questions & answers
No questions yet about this part. Ask about fitment, what's in the box or installation and we'll answer here.