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✨ Upgrade your Chevy’s heart with precision and shine! ⚙️
The CarBole 21 Degree Chrome Water Neck Thermostat Housing is a high-quality, chrome-plated aluminum alloy component designed for 1966-75 Chevy big block V8 and small block V6 engines. Featuring a precise 21-degree angle for perfect fitment, it includes all necessary mounting hardware and a leak-proof O-ring seal for easy, reliable installation. This thermostat housing not only enhances engine aesthetics with its polished finish but also delivers dependable performance, making it a top-rated choice among automotive enthusiasts.






| ASIN | B06XDDXJ22 |
| Best Sellers Rank | #7,640 in Automotive ( See Top 100 in Automotive ) #3 in Automotive Replacement Engine Thermostat Housings |
| Brand | CarBole |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,139) |
| Date First Available | March 2, 2017 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 7.6 ounces |
| Manufacturer | CarBole |
| Manufacturer Part Number | CB-10304001 |
| Package Dimensions | 6.02 x 5.31 x 2.09 inches |
4**D
Replaced a pitted and leaking OEM part
It’s shiny and didn’t leak. This was the cheapest option to replace a pitted OEM housing from 1978 on a Ford 302. Fit perfect and looks good too. Good quality so far. The o-ring was all wadded up and didn’t want to lay flat. Hot water and a heavy car part fixed that issue. Would buy again in a pinch.
S**E
Thermostat housing
Very nice chrome thermostat housing
J**N
Seals perfect, o ring included. Small block Chevy
Works great on my sbc intake
J**T
verry good quality
it fit perfectly on my small block 350
G**Y
Works with some mod's.
The small tube was smaller than the stock tube , I used 2 shrink wrap bands to make it simalar to stock. changed the bolts to allen head style to get more tork to seal the o-ring.
P**E
Good quality
Worked excellent for my build. Very good quality, fast shipping, good seller.
M**D
Cheaper than the parts chains and they don’t ask if it’s front or rear wheel drive and the color
Works
D**D
Good
Worked well on my 85 c10. Looks nice. It’s been installed a couple weeks and no leaks.
A**I
Thermostat
This housing is far lighter in weight than the original , i was stupid enough to remove the studs fitted as this is posted with 8mm bolts where as original studs are 10mm into block and 8mm nuts to suit housing holes , luckily a quick helicoil in one hole and original stud in other sorted it . Apart from that it sealed brilliantly , would buy again
C**D
Decent Quality. Inexpensive.
Nice product. Inexpensive, bolts and gasket inside the housing for delivery. Quick delivery.
M**A
Funciona bien y bien acabado
Buen producto, queda perfecto y buen acabado
G**T
Good price
Good price. Looked good. Fit good.
L**N
Great for the price
Feels nice, good finish and comes with everything you need.
Trustpilot
1 month ago
1 month ago