SKU: 66435189064

503FP 1/2 x 3/8 x 3/8 x 3/4 Flared Cross Fitting

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Description

503FP 1/2 x 3/8 x 3/8 x 3/4 Flared Cross FittingThe 503FP 1 2 x 3 8 x 3 8 x 3 4 Flared Cross Fitting is a four way connector designed to join four SAE 45 flare connections in fluid, gas, and hydraulic systems. It ensures secure, leak free performance in high pressure applications such as HVAC, refrigeration, fuel, and pneumatic systems. Specification Details TYPE Flared Cross Fitting DESIGN Leak proof 45 Flare seal for secure performance MATERIAL Brass for long lasting durability for various

The 503FP 1/2 x 3/8 x 3/8 x 3/4 Flared Cross Fitting is a four-way connector designed to join four SAE 45° flare connections in fluid, gas, and hydraulic systems. It ensures secure, leak-free performance in high-pressure applications such as HVAC, refrigeration, fuel, and pneumatic systems.

Specification Details
TYPE Flared Cross Fitting
DESIGN Leak-proof 45° Flare seal for secure performance
MATERIAL Brass for long lasting durability for various purposes, corrosion-resistance
WEIGHT (LBS)
CONNECTION SIZE 1  1/2"
CONNECTION SIZE 2 3/8"
CONNECTION SIZE 3 3/8"
CONNECTION SIZE 4 3/4"
CONNECTION TYPE MFLRD|MFLRD|MFLRD|FPT
CONNECTION TYPE 1 Male Flared
CONNECTION TYPE 2 Male Flared
CONNECTION TYPE 3 Male Flared
CONNECTION TYPE 4 Female NPT
FITTING TYPE Cross
FOR USE WITH Aluminum, Brass, Copper, Steel Hydraulic Tubing That Can Be Flared
TEMPERATURE RATING -65 to 250 deg F
THREAD SIZE 1 3/4 - 16
THREAD SIZE 2 5/8 - 18
THREAD SIZE 3 5/8 - 18
THREAD SIZE 4 3/4 - 14
STANDARD APPROVALS ASA|ASME|MS (Military Standards)|SAE
APPLICATIONS Ideal for LP and natural gas, flammable liquids, instrumentation, refrigeration, power steering, hydraulic and pneumatic systems
BRAND Midland Industries

 

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Exchange/Return Notes
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SKU: 66435189064

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4.9 ★★★★★
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Jeff Pesos
Pawtucket, US
★★★★★ 4
Works like a supplement
If you use it and see a difference, you will blame it on this cleaner, if not, you will say the product does not work. Exactly like your weight loss supplements! Who knows what this stuff does, but it may do something. Or maybe it does not.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 7, 2026
M
Verified Purchase
Michael Sliwinski
Lexington, US
★★★★★ 5
Used to clean an O2 sensor
Seems to have resolved an issue with a wavering idle for my 89 Mercedes 300e with 468,000 miles.
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Reviewed in the United States on March 27, 2026
M
Verified Purchase
Marvin Burton
Los Angeles, US
★★★★★ 3
Nothing
Didn’t work for me
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Reviewed in the United States on May 26, 2026
M
Verified Purchase
mechanic
Massapequa, US
★★★★★ 1
It doesn’t work
This don’t work at all. I do not recommend. I use all four containers, and the light is still on.
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Reviewed in the United States on May 20, 2026
A
Verified Purchase
Amazon Customer
Lowell, US
★★★★★ 5
2014 Ford Edge SEL
Worked like a charm! Used as directed, it cleared the P0420 & P0430 codes that were coming up on my OBD II scanner after a complete engine swap. Definitely recommend this product.
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Reviewed in the United States on May 23, 2026

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