What does -10 AN ORB x 3/8 in. MPT mean?

The -10 AN ORB side is a 10/16 in. (5/8 in.) O-ring boss port connection. The other side is a 3/8 in. male NPT pipe thread. It adapts one to the other.

Do I need an O-ring for the ORB side?

Yes. An ORB port seals on an O-ring against the boss face, and this adapter does not include one. Use an O-ring sized for a -10 boss.

Will it work for fuel and oil lines?

Aluminum AN adapters are commonly used in fuel, oil and coolant systems. No pressure rating is published for this part, so check it suits your system's pressure before use.

How do I seal the NPT side?

NPT threads seal on the thread itself, so use PTFE tape or a thread sealant. Keep sealant off the first thread so it cannot enter the line.

Is it the same as a steel adapter?

It does the same job but is lighter and softer. Aluminum is easier to cross-thread or crush if overtightened, so tighten to spec rather than hard.

Light House Beauty

494001-BL -10 AN ORB x 0.37 in. MPT Adapter Fitting - Black

Best price now

$32.05at WalmartChecked Nov 9

Prices are checked against each store and labelled with when.

Visit Walmart

Light House Beauty

494001-BL -10 AN ORB x 0.37 in. MPT Adapter Fitting - Black

Best price now

$32.05at WalmartChecked Nov 9

Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Last seen at $32.05 at Walmart on Nov 9.

Our take on the 494001-BL -10 AN ORB x 0.37 in. MPT Adapter Fitting - Black

This is a black anodized aluminum adapter that joins a -10 AN ORB (O-ring boss) port to a 3/8 in. male NPT thread. It is aimed at fuel, oil and coolant plumbing on race cars, hot rods and custom builds. The aluminum body keeps weight down compared with steel adapters, and the machined threads are cut for clean engagement. It is a single fitting, so it competes with the many AN-to-NPT adapters from brands like Earl's, Russell and Fragola on material, finish and thread quality rather than on features.

Best forPlumbing a -10 AN line into a 3/8 in. NPT portFuel, oil or coolant systems on a race or custom buildBuilders who want a lightweight aluminum adapter

Pros

Aluminum body is lighter than steel equivalents
Black anodized finish suits black hose and fittings
Machined threads for clean engagement
Combines ORB and NPT in one adapter, avoiding a second part

Cons

Aluminum is softer than steel and can be damaged by overtightening
Single fitting only; no O-ring or seal included
No pressure or temperature rating given
NPT side needs sealant or tape to seal properly

494001-BL -10 AN ORB x 0.37 in. MPT Adapter Fitting - Black prices at every store

WalmartNew
In stockSold by UnbeatableSaleReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
$32.05Free shippingChecked Nov 9
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About the 494001-BL -10 AN ORB x 0.37 in. MPT Adapter Fitting - Black

This is a -10 AN ORB x 0.37 in. MPT adapter fitting in black. It is made of lightweight aluminum and is precision machined for precise thread engagement.

The fitting is designed to match up with all hose ends.

Fitting size: -10 AN ORB x 0.37 in. MPT
Material: Aluminum
Color: Black
Size: 0.37 in.

Specifications

color: MulticolorSource
size: 0.37Source

Questions and answers

What does -10 AN ORB x 3/8 in. MPT mean?: The -10 AN ORB side is a 10/16 in. (5/8 in.) O-ring boss port connection. The other side is a 3/8 in. male NPT pipe thread. It adapts one to the other.
Do I need an O-ring for the ORB side?: Yes. An ORB port seals on an O-ring against the boss face, and this adapter does not include one. Use an O-ring sized for a -10 boss.
Will it work for fuel and oil lines?: Aluminum AN adapters are commonly used in fuel, oil and coolant systems. No pressure rating is published for this part, so check it suits your system's pressure before use.
How do I seal the NPT side?: NPT threads seal on the thread itself, so use PTFE tape or a thread sealant. Keep sealant off the first thread so it cannot enter the line.
Is it the same as a steel adapter?: It does the same job but is lighter and softer. Aluminum is easier to cross-thread or crush if overtightened, so tighten to spec rather than hard.
Where is the 494001-BL -10 AN ORB x 0.37 in. MPT Adapter Fitting - Black cheapest?: At Walmart, for $32.05, as of our latest check.