GM / Delco Moraine 5462084 (903‑T / K‑33151) Brake Cylinder Repair Kit – NOS

Description:

GM / Delco Moraine 5462084 (903‑T / K‑33151) Brake Cylinder Repair Kit – NOS

Genuine New Old Stock Delco Moraine 903‑T wheel‑cylinder rebuild kit for mid‑1950s GM full‑size models. Correct for 1955–58 Chevrolet (150, 210, Bel Air, Biscayne, Impala) and 1955–58 Pontiac (Chieftain, Star Chief, Bonneville) 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: 5462084 • Delco Kit: 903‑T • Alternate Kit: K‑33151 • Application: Front wheel cylinders (1") • Models: Chevrolet & Pontiac full‑size, 1955–58 • Condition: NOS, stored in climate‑controlled inventory

A rare early‑Delco brake component—highly desirable for Tri‑Five restorations.

M / Delco Moraine 5462084 – 903‑T (K‑33151) is a mid‑1950s front wheel‑cylinder rebuild kit from the 903‑series, the same family as 903‑X and 903‑Y. These kits were used on 1955–1958 GM full‑size cars, especially Chevrolet and Pontiac. The 903‑T variant is less common than 903‑X and is considered a desirable NOS piece for Tri‑Five restorers.

903‑T part identity

GM Part: 5462084 Delco Moraine Code: 903‑T Alternate Kit Number: K‑33151 Type: Wheel Cylinder Repair Kit Bore Size: 1" (standard for mid‑1950s GM front cylinders) Era: 1955–1958 GM full‑size Typical contents: Rubber cups, boots, spring, retainers, piston seals

The 903‑series was Delco’s service line for Tri‑Five and early post‑Tri‑Five brake systems before the 901‑ and 904‑series redesigns.

Fitment chart

Chevrolet – Full‑Size (Front Wheel Cylinders)

Pontiac – Full‑Size (Front Wheel Cylinders)

Notes

• 903‑T is a front‑cylinder kit for the 1" Delco cylinders used across these platforms.

• It was superseded by 901‑series and later 904‑series kits in dealer catalogs.

• 903‑T is rarer than 903‑X, making it more valuable to collectors.