Product Description
FLEECE FPE-34873-A -10 TO 3/4 INCH-16 STRAIGHT MALE BLACK W/ O-RING
The FLEECE FPE-34873-A -10 to 3/4 inch-16 Straight Male Black w/ O-Ring is a universal high-performance adapter designed to make custom fuel, oil, and fluid system plumbing clean and reliable. This black anodized aluminum fitting adapts a -10 AN hose to a 3/4 inch-16 straight cut O-ring port, giving you a strong, leak-free connection that looks as good as it performs.
Whether you’re feeding a lift pump, plumbing a return line, or building a custom oil or transmission cooler setup, this straight male adapter keeps your routing simple and tidy. The black anodized finish resists corrosion and blends into modern engine bays, while the included O-ring ensures a consistent seal under pressure.
- Adapts -10 AN hose to 3/4 inch-16 straight cut O-ring port
- Black anodized aluminum for strength and corrosion resistance
- Straight design for clean, easy hose routing
- Includes O-ring for dependable, leak-free sealing
- Ideal for fuel, oil, power steering, and transmission line plumbing
- Universal fit for custom diesel and performance applications
Fitment / Application
Type: Universal AN to O-ring adapter
Primary Use: Adapts -10 AN hose to 3/4 inch-16 straight cut O-ring / inverted flare ports for:
- Custom fuel supply and return lines
- Lift pump and fuel filter plumbing
- Engine oil cooler and remote filter setups
- Transmission and power steering cooler lines
- General fluid system plumbing on performance and diesel builds
Note: This fitting is a universal adapter. Verify port thread (3/4 inch-16 O-ring) and hose size (-10 AN) on your specific components before installation.
Fleece Cross-Reference / Related Fittings
- -8 to 3/4 inch-16 straight male black w/ O-ring: FLEECE FPE-APT-34-08 -8 TO 3/4 INCH-16 STRAIGHT MALE BLACK W/ O-RING
- 1/2 inch NPT to -10AN male adapter: FLEECE FPE-34874-A 1/2 INCH NPT TO -10AN MALE
- 1/2 inch quick connect to 3/4 inch-16 O-ring (-8 AN): FLEECE FPE-34781-A 1/2 INCH QUICK CONNECT TO 3/4 INCH-16 O-RING (-8 AN)
- 1/2 inch quick connect to 3/4 inch-16 O-ring (-8 AN) alternate: FLEECE FPE-34900-A 1/2 INCH QUICK CONNECT TO 3/4 INCH-16 O-RING (-8 AN)
Why Choose Fleece FPE-34873-A for Your Build?
Small fittings can make or break a custom fuel or oil system. The FLEECE FPE-34873-A combines precise machining, high-quality aluminum, and an O-ring sealed 3/4 inch-16 interface to deliver the kind of leak-free, trouble-free performance you expect from Fleece Performance Engineering. Whether you’re upgrading a Cummins, Duramax, Power Stroke, or a custom hot rod, this adapter keeps your plumbing tight, clean, and reliable.
Installation Notes
- Confirm both your hose end (-10 AN) and port (3/4 inch-16 O-ring) before installation.
- Lubricate the O-ring lightly with clean engine oil or compatible lubricant before tightening.
- Do not overtighten; follow typical AN and O-ring fitting torque guidelines.
- Check for leaks with the system pressurized and re-tighten if necessary.
Specifications for FLEECE FPE-34873-A
| Attribute | Value |
|---|---|
| Brand | Fleece Performance Engineering |
| Part Number | FPE-34873-A |
| Adapter Type | AN to straight cut O-ring / inverted flare adapter |
| Fitting Size 1 | -10 AN |
| Fitting Size 2 | 3/4 inch-16 straight cut O-ring port |
| Fitting Angle | Straight |
| Material | Aluminum |
| Finish | Black anodized |
| O-Ring Included | Yes (for 3/4 inch-16 port) |
| UPC | 670875717060 |
| GTIN | 670875717060 |
| Shipping Weight | Approx. 1.00 lb (packaged) |
| Shipping Dimensions | Approx. 1.00 in x 1.00 in x 1.00 in |
| Cross Reference | Fleece FPE-APT-34-08, FPE-34874-A, FPE-34781-A, FPE-34900-A (related AN/O-ring adapters) |
| E-Codes | Not applicable (universal fitting) |
| Prop 65 | WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
FAQ
What does the Fleece FPE-34873-A fitting actually adapt?
The FPE-34873-A adapts a -10 AN hose end to a 3/4 inch-16 straight cut O-ring style port. It is typically used anywhere you need to connect -10 AN hose to a 3/4-16 O-ring or inverted flare port in your fuel, oil, or other fluid systems.
Is this fitting vehicle-specific or universal?
This is a universal fitting. As long as you have -10 AN hose on one side and a 3/4 inch-16 O-ring port on the other, this adapter can be used on Cummins, Duramax, Power Stroke, gas trucks, hot rods, and more.
Can I use the FPE-34873-A for fuel, oil, and transmission fluid?
Yes. The black anodized aluminum construction and O-ring sealing make it suitable for most automotive fluids, including diesel fuel, gasoline, engine oil, transmission fluid, and power steering fluid, provided they are compatible with aluminum and the O-ring material.
Do I need sealant on the 3/4 inch-16 O-ring side?
No additional thread sealant should be used on the O-ring side. The O-ring provides the seal. You may use a small amount of compatible lubricant on the O-ring to prevent damage during installation. If you use any sealant, apply it sparingly only where recommended and never on the O-ring itself.
What other Fleece fittings pair well with this adapter?
For matching connections, many builders combine this fitting with Fleece pieces like FPE-APT-34-08, FPE-34874-A, and FPE-34900-A to complete a full AN-based fuel or oil system with consistent styling and quality.
