Specifications: 

• Material: Cast Iron
• Length: 2.375
• Inside Diameter: 0.3973
• Outside Diameter: 0.6580
• Type: 1-SR

Applicants: 

• GMC: Years 1955 & 1956, 100 model with 324 (5.3L) 16V Engine
• GMC: Year 1955, 100-22 model with 324 (5.3L) 16V Engine
• GMC: Years 1955 & 1956, 150 model with 324 (5.3L) 16V Engine
• GMC: Year 1955, 150-22 model with 324 (5.3L) 16V Engine
• GMC: Years 1955 & 1956, 250 model with 324 (5.3L) 16V Engine
• GMC: Year 1955, 250-22 model with 324 (5.3L) 16V Engine
• GMC: Year 1955, 280-22 model with 324 (5.3L) 16V Engine

Interchange: 

• General Motors: Part #553471
• SBI, Inc.: Part #1401878
• Sealed Power / FM: Part #VG584