Model 53814R: Hex Reducer - 3/8" Male NPT to 1/4" Female NPT Adapter

  • Hex reducer - 1/4" F NPT to 3/8" M NPT - Kleinn Automotive Accessories - KL 53814R

KL 53814R

$4.29
$4.29 $4.29

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PROP 65 WARNING:
This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.

MODEL 53814R: HEX ADAPTER REDUCER – 3/8" MALE NPT TO 1/4" FEMALE NPT

PRECISION PORT REDUCTION & ACCESSORY INTERFACE

Bridge structural port variances seamlessly with the premium Kleinn Model 53814R Hex Adapter Reducer. Precision-machined to streamline component sizing layout paths, this commercial-grade step-down reducer allows you to adapt a larger 3/8" Female NPT receiver opening to accept a standard 1/4" Male NPT accessory. It serves as an essential adapter for cleanly introducing specialized upfitter hardware straight into your standard onboard air manifold loops, distribution blocks, or air storage tank ports.

SOLID BRASS HEX-HEAD STABILITY

The Model 53814R features a robust hex-shaped block profile that provides an optimal tool layout for flat wrench engagement, allowing installers to easily apply perfect seating torque without distorting the threads. Machined entirely from industrial-grade brass, it delivers a high-pressure mechanical seal capable of continuously handling high-PSI environments. Precision-cut threads maintain a snug, rigid grip under heavy automotive chassis vibration, making it ideal for plumbing air lines, pressure switches, and electronic safety valves.

Why Choose the 53814R Hex Reducer?

  • Seamless Port Reduction: Adapts a larger 3/8" Female NPT port down to a standard 1/4" Female NPT thread path without stacking multiple adapters or bulky pipe extensions.
  • Compact Hex Nut Body: Low-profile hex collar provides flat grip surfaces for tight wrench work inside cramped engine bays, vehicle dashboards, or chassis gaps.
  • Industrial Grade Brass: Precision-machined metal housing provides excellent corrosion resistance and superior safety margins in high-PSI systems.
  • Vibration Resistant Fit: Deep, clean, matching thread cuts ensure a leak-proof structural connection that won't back out under extreme off-road or highway movement.

THE VERDICT: The definitive threaded reducer for custom pneumatic system integration. The Model 53814R combines a heavy-duty industrial brass casting with a low-profile footprint to guarantee your accessory ports remain completely secure and leak-free.

What's Included in the Box

  • Hex Reducer Adapter: One (1) Model 53814R 3/8" Male NPT to 1/4" Female NPT Brass Threaded Fitting.

🔴 PRO TIP: Prevent hidden system leaks and thread fractures. When winding this hex adapter into your manifold or tank ports, avoid over-torqueing to protect the brass walls from stress cracking. Always apply a few drops of liquid anaerobic thread sealant compound like our genuine Kleinn JUICE across the 3/8" Male NPT threads to block out slow, phantom pneumatic pressure drops.

PRODUCT SPECIFICATIONS

Feature Details
Part Number KL 53814R (53814R)
Fitting Interface Type Threaded Hex Reducer / Step-Down Adapter Nipple
Male Thread Connection Size 3/8" Male NPT (National Pipe Thread)
Female Thread Connection Size 1/4" Female NPT (National Pipe Thread)
Material Composition Precision Industrial-Grade Solid Brass Construction
Primary Functional Utility Mounting standard 1/4" NPT accessories, switches, and lines into larger 3/8" NPT receiver bungs
Component Weight 0.05 lbs

 

Model 53814R: Hex Reducer - 3/8" Male NPT to 1/4" Female NPT Adapter

$4.29

Does it come with a warranty?

Kleinn Automotive Accessories Limited Warranty

Kleinn Automotive Accessories stands behind the quality and craftsmanship of our products. Our products are covered against defects in materials and workmanship when properly installed and used under normal operating conditions, subject to the terms below.

One-Year Limited Warranty

Unless otherwise specified, Kleinn Automotive Accessories products are covered by a 1-year limited warranty from the original date of purchase.

This warranty applies to the original purchaser and covers defects in materials and workmanship under normal use.

If a product is determined to have a covered warranty defect, Kleinn Automotive Accessories will, at its discretion, repair or replace the defective product or component.

What Is Not Covered

This warranty does not cover damage or failure resulting from:

  • Improper installation
  • Misuse, abuse, or improper operation
  • Use outside the product's intended application or specifications
  • Modification or alteration of the product
  • Accidents or physical damage
  • Electrical damage
  • Environmental damage or exposure
  • Normal wear and tear

Kleinn Automotive Accessories is not responsible for installation or removal charges, diagnostic fees, labor costs, vehicle downtime, loss of use, or other incidental or consequential expenses associated with warranty service.

Warranty Claims

To request warranty service, email warranty@kleinn.com with the following information:

  • A copy of your original sales receipt or proof of purchase
  • Your full name
  • Email address
  • Telephone number
  • A brief description of the issue

A Kleinn representative will review your claim and may first attempt to resolve the issue through technical support.

If the product needs to be returned for inspection, Kleinn will provide a Return Authorization (RA) number and return instructions. Products should not be returned without prior authorization.

Once received, the product will be inspected to determine whether the issue is covered under warranty. If a covered defect in materials or workmanship is confirmed, Kleinn will, at its discretion, repair or replace the defective product or component.

If inspection determines that the product does not have a covered warranty defect, the product may be returned to the customer, and the customer will be responsible for applicable return shipping costs.

This limited warranty gives you specific legal rights. You may also have other rights, which vary from state to state.

Kleinn Automotive Accessories
4045 N. Highway Drive, Tucson, AZ 85705
Tel (520) 579-1531

What's the returns policy?

How To Return An Item

Your item must be in its original unused condition to be returned, unless there is a manufacturer defect. You must return the item within 30 days of your purchase.

1. Please email support@kleinn.com to request a refund and we will assign you a Return Authorization #.

2. Mail your returned item to:
Kleinn Automotive Accessories
Returns Department
4045 N Highway Drive
Tucson, AZ 85705

3. Include in your package a signed letter stating the reason for your return and the original receipt.

Return Non-Exceptions

Merchandise that has been worn, used, or altered will not be accepted for return or exchange.

Restocking Fee

All returns are subject to a 15% restocking fee, which will be deducted from your refund. If shipping and handling fees were applied to your order, they are non-refundable.

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