Top 10 NPT Adapter 3/8 to 1/4 – Automotive Replacement Fuel System Fittings

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1. autoBbox


1/4 NPT Male to 6AN 3/8 Hose Barb Nipple Straight Fuel Line Adapter Fitting Aluminum

autoBbox #ad - 1/4 inch male thread to AN6 barb push on alloy pipe connector. Black anodized finish for Durability, Long Last and Strength. Such as: oil/ fuel/ water/ fluid/ Air Line with 1/4" npt male thread to 3/8" hose. Universal fit. Npt thread to push on hose barb reusable tube adaptor. Made of high performance lightweight 6061-T6 CNC Machined Billet Aluminum Material.
BrandautoBbox #ad
ManufacturerautoBbox #ad
Part NumberWAN840-6-blk

2. steber


1/4 NPT Male to 6AN 3/8 Hose Barb Fuel Fitting Aluminum Adapter Straight Black

steber #ad - Can be used for most automotive needs, Air, such as: Fuel, Coolant, Oil, and more. Black anodized finish for Long Last, Strength and Durability. Made from lightweight 6061-t6 cnc machined billet aluminum alloy. 1/4 npt male thread to 3/8" barb push on hose adaptors straight pipe connector. Hex head male npt to push-on hose fittings.
Brandsteber #ad
Manufacturersteber #ad
Part NumberBAN840-6-bk



Black Aluminum Water or Oil Fuel Fitting 3/8" Male NPT to Female 1/4" NPT Pipe Straight Hollow Reducer Adapter

AC PERFORMANCE #ad - Please buy according to the size of NPT in the picture. Made of high performance lightweight 6061-T6 CNC Machined Billet Aluminum Material. Black anodized Finish for Durability and Strength. Quality assurance tested to ensure top quality. Precision machined to exacting tolerances for trouble-free performance. Size: 3/8" male npt to 1/4" female npt.
ManufacturerFOURAGE #ad
Height0.6 Inches
Length1.5 Inches
Weight0.03 Pounds
Width0.6 Inches
Part NumberCG00101-3/8-1/4_BKA

4. ICT Billet


ICT Billet 3/8 Fuel Rail Quick Connect Male to 1/4" NPT Adapter Fitting Hose Thread Fuel Oil Gas Coolant Connector Pipe End Braided Plumbing Port Fluid Aluminum AN817-02-04NP

ICT Billet #ad - 1/4" npt to 3/8" factory fuel line quick connector. Made from aerospace-grade billet aluminum. Package includes: 1 adapter fitting. Made in America. 3/8" compatible with all gm quick connectors for fuel "supply" line return line is 5/16".
BrandICT Billet #ad
ManufacturerICT Billet #ad
Weight0.05 Pounds
Part NumberAN817-02-04NP



1 Pieces 45 Degree BLACK 1/4" NPT Male to 3/8" Hose Barb Fitting Adapter for Oil/Fuel/Water/Fluid/Air Line/Gauges/Hose Tube 45 Degree, 1 Piece

EMUSA #ad - 1 pieces 45 degree black 1/4" npt male to 3/8" Hose Barb Fitting Adapter. Made of high quality lightweight T6061 Aluminum. Universal, fits all oil/ fuel/ water/ fluid/ Air Line or Gauges with 1/2"NPT OR 3/8" Ends.
BrandEMUSA #ad
ManufacturerEMUSA #ad
Part NumberFT_14-38_BK

6. AdlerSpeed


1/4" NPT To 3/8" 90 Degree Hose End Barb Adapter Fitting Aluminum Black

AdlerSpeed #ad - Each component is precision-machined to exact tolerances for trouble-free performance. Manufactured using aluminum alloys that meet or exceed minimum requirements for hose fittings. Size: 1/4" npt to 3/8" Barb. Colour: Black. Material: Aluminum alloys.
BrandAdlerSpeed #ad
ManufacturerAdlerSpeed #ad
Part Number43002-BLACK

7. Camco


Camco 59953 Propane Fitting, 1/4" Male NPT x 1/4" Female Inverted Flare

Camco #ad - Connect a 1/4" inverted flare pigtail to a regulator with 1/4" female NPT ports. For use with some regulators. 1/4" male npt x 1/4" female Inverted Flare. Sold brass construction. Easy to install.
BrandCamco #ad
ManufacturerCamco #ad
Height0.9 Inches
Length6 Inches
Weight0.06 Pounds
Width2 Inches
Part Number59953



EVIL ENERGY 6AN AN6 Flare to 3/8" NPT Male Straight Fitting Union Flare Adapter Aluminum Black

EVIL ENERGY #ad - These adapter hose fittings are designed to quickly make professional 37° AN connections from NPT tapered pipe threads. Evil energy provide this product 3-month warranty. Please contact us first if you have any doubts after receiving the product.

Each straight fitting is completed with a black anodized finish for corrosion protection. Feature: anti-rust, waterproof, oil-proof. Made of high performance lightweight 6061-t6 billet aluminum material. One side is an standard and the other is nPT National Pipe Taper Thread. Designed for smooth flow that gives better fluid flow, tight secure and leaks free connection. Widely used-6an straight flare to pipe adapter is widely used in kinds of liquids, e85, water, industrial, oil, gas etc.

All threads are designed for maximum percentage of engagement. Advantage: the 6an male flare to 3/8" npt fitting has one male side an is a 37 degree flare fitting taper and the other male side NPT is a 60 degree tapered threads, assures a tight seal and ease of operation. Fuel line connector are designed for a smooth flow, and easy assembly. The male flare fitting fit all oil cooler / fluid Line / fuel tank / fuel pump / turbo. Straight bulkhead Flare is sturdy, strong and reliable.
ManufacturerSpeedwow Tuning #ad
Part NumberCS00272S0606

9. Craftsman


Female to Male CMMT99292, 3/8-Inch Drive, CRAFTSMAN 3/8" To 1/4" Socket Adapter

Craftsman #ad - Corrosion resistance: Socket with full polish chrome finish. 3/8 to 1/4 socket adapter allows for different drive size use. Quick size identification: Socket adapter comes with large markings. Meets or exceeds ASME Specifications.
BrandCraftsman #ad
ManufacturerCRAFTSMAN #ad
Part NumberCMMT99292

10. Allstar


Allstar Performance ALL50120 1/8" NPT to 3/8-24" Adapter Fitting 4 Pack

Allstar #ad - Set of 4. Brass. 1/8 in npt male to 3/8-24 in Inverted Flare Female. Fit type: Vehicle Specific. 3/16 in Hardline.
BrandAllstar #ad
ManufacturerAllstar Performance #ad
Height6 Inches
Length54 Inches
Weight0.09 Pounds
Width42 Inches
Part NumberALL50120
Warranty90 day