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#8 MP X #4 FP (RIGID) 90*

Description & Features

A rigid 90-degree hydraulic fitting connecting a #8 male port thread to a #4 female port thread, the #8 MP x #4 FP (Rigid) 90° is manufactured by Brennan Industries. The 90-degree elbow configuration redirects flow at a right angle, making it well-suited for installations where space constraints require a change in line direction without the use of a swept or swivel connection.

The rigid construction provides a fixed, non-articulating joint appropriate for stable, vibration-controlled hydraulic assemblies. The port-to-port size reduction from #8 to #4 accommodates systems requiring a transition between these two thread sizes within a single compact fitting.

SKU: 5502-08-04

Supplier Part Number (MPN): 5502-08-04-FG

Alternate Part Numbers: A2089-8-4S

Specifications

Alternate Part Numbers Alternate Part Number A2089-8-4S	Brand Brennan Industries Inc	Brand Brennan Industries	Pack Size 1.00	UOM EA	Supplier Part Number 5502-08-04-FG	Product Weight 0.26 lbs

Product Questions & Answers (2)

Question by: Kent H on Apr 19, 2025, 10:06 AM

fitting goes from an 8 to a 4, so is that a straight-up size reduction or is one of them the port size and the other something else?

Answer by: Customer Support on Apr 21, 2025, 6:10 AM

Both numbers refer to port thread sizes, so yes, it is a reduction from one to the other in a single fitting. The #8 side is the male port thread and the #4 side is the female port thread. That lets you tie two different-sized ports together at a right angle without needing an adapter in between. The 90-degree elbow just handles the direction change at the same time, so you get the size transition and the turn all in one piece.

Question by: Clint C on Feb 18, 2026, 6:26 AM

trying to tighten up a line in a tight spot, is this the kind of 90 elbow that stays put and dont swivel around?

Answer by: Customer Support on Feb 19, 2026, 10:19 AM

Rigid construction means the joint is fixed and non-articulating, so once you clock it and tighten it down it is not meant to swivel. The 90 degree elbow just redirects flow at a right angle for tight installations.