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jsd m073 pontiac polished aluminum water neck thermostat housing for 326, 350, 389, 400, 421, and 455 engines logo

JSD M073 Pontiac Polished Aluminum Water Neck Thermostat Housing for 326, 350, 389, 400, 421, and 455 Engines Review

3

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Average

Revainrating 3.5 out of 5  
Rating 
3.7
🌡️ Engine Cooling & Climate Control, 🛠️ Replacement Parts

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Description of JSD M073 Pontiac Polished Aluminum Water Neck Thermostat Housing for 326, 350, 389, 400, 421, and 455 Engines

1 Year Warranty - Fast Shipping - Hassle Free Return. FITS 326 350 389 400 421 455 SMALL & BIG BLOCK PONTIAC ENGINES FROM 1964-1979 NOTE: THESE WILL NOT FIT 383 PONTIAC ENGINES. PONTIAC LE MANS, GTO, BONNEVILLE. Bolt pattern: 10 mm Allen head bolt. Surface Finish: POLISHED BILLET ALUMINUM.

Reviews

Global ratings 3
  • 5
    1
  • 4
    1
  • 3
    0
  • 2
    1
  • 1
    0

Type of review

Revainrating 5 out of 5

Pontiac Thermostat Housing Review

I am very happy with it. Normally, whatever thermostat housing I use, my radiator hose goes into my valve cover vent. I use tall valve covers because of the roller rockers and a slightly larger breather, and even a small one goes straight in so I avoid that.

Pros
  • Engine Cooling & Climate Control
Cons
  • Reliability

Revainrating 2 out of 5

Nice piece though. best in Thermostat Housing

This is advertised as for Pontiac. While it looks like a well-made piece, the hex bolts don't match the Pontiac. To complicate things a bit, the body's bolt holes are recessed, further limiting the types of fasteners you can use. I'm not sure yet if I'll keep it or not. I'm looking for some screws that can work without looking out of place. Too bad they don't include the right hardware. Other than that, it's a nice component.

Pros
  • Thermostat Housing
Cons
  • Almost Never