GM / Delco Moraine 5456301 (904‑R) Brake Cylinder Repair Kit – NOS

Description:

M / Delco Moraine 5456301 (904‑R) Brake Cylinder Repair Kit – NOS

Genuine New Old Stock Delco Moraine 904‑R wheel cylinder rebuild kit for late‑1950s and early‑1960s GM full‑size models. Correct for 1959–62 Chevrolet (Biscayne, Bel Air, Impala) and 1959–62 Pontiac (Catalina, Star Chief) front wheel cylinders using the 1" bore design.

This is an original Delco service part—ideal for concours restorations, OEM‑correct repairs, or period‑authentic parts collections.

Details: • GM Part: 5456301 • Delco Code: 904‑R • Application: Front wheel cylinders (1") • Models: Chevrolet & Pontiac full‑size, 1959–62 • Condition: NOS, stored in climate‑controlled inventory

A desirable early‑Delco brake component—excellent for restoration‑grade builds

The GM / Delco Moraine 5456301 – 904‑R kit is a front wheel‑cylinder rebuild kit used on several late‑1950s and early‑1960s GM full‑size platforms, and it sits in the same family as the 901‑ and 905‑series kits you’ve been cataloging. The 904‑series is a mid‑generation update—newer than 901‑series, earlier than 905‑series—and was used heavily on Chevrolet and Pontiac full‑size cars.

🔧 Part Identity: 5456301 / 904‑R

GM Part: 5456301 Delco Moraine Code: 904‑R Type: Wheel Cylinder Repair Kit Bore Size: 1" (typical for 904‑series front cylinders) Era: 1958–1962 GM full‑size Contents: Rubber cups, boots, spring, retainers (varies slightly by production year)

📘 Fitment Chart (Verified Cross‑Reference)

Chevrolet – Full‑Size

Pontiac – Full‑Size

Notes

• 904‑R is the correct Delco service kit for the 1" front cylinders used on these platforms.

• It superseded some 901‑series kits and was later superseded by 905‑series equivalents.

• These kits are high‑demand among Chevrolet and Pontiac restorers because front‑cylinder kits are harder to source than rear.