Install a new o-ring for a proper seal. 36×3.15
$1.00
The coolant outlet O-ring ensures a proper seal between the coolant outlet and mating components, preventing coolant leaks and maintaining correct operating temperatures.
Over time, exposure to heat, pressure, and coolant chemicals can cause O-rings to harden, flatten, or crack—leading to leaks that compromise cooling system performance. Each time the outlet or coolant piping is removed, this O-ring should be replaced to guarantee a leak-free installation.
This replacement is manufactured to OEM specifications, ensuring precision fit and long-lasting sealing reliability.
JC PRONTEZZA supplies OEM-quality O-rings and sealing components to keep your cooling system properly sealed and your engine protected.
OE Part Number: 037 121 687
| Weight | .02 lbs |
|---|---|
| Dimensions | 2 × 2 × .2 in |
| Mfg Part # | 037121687 |
| Year | Make | Model | Engine | Notes |
|---|---|---|---|---|
| Audi | B5 A4 | 1.8T | Use vehicle selector to confirm fitment | |
| Audi | B6 A4 | 1.8T | Use vehicle selector to confirm fitment | |
| Audi | TT MKI | 180HP | Use vehicle selector to confirm fitment | |
| Audi | TT MKI | 225HP | Use vehicle selector to confirm fitment | |
| Volkswagen | 337/20AE | 1.8T | Use vehicle selector to confirm fitment | |
| Volkswagen | Cabrio III | 2.0 | Use vehicle selector to confirm fitment | |
| Volkswagen | Corrado | G60 | Use vehicle selector to confirm fitment | |
| Volkswagen | Golf I | 8v | Use vehicle selector to confirm fitment | |
| Volkswagen | Golf II | 8v | Use vehicle selector to confirm fitment | |
| Volkswagen | Golf III | 2.0 | Use vehicle selector to confirm fitment | |
| Volkswagen | Golf III | TDI | Use vehicle selector to confirm fitment | |
| Volkswagen | Golf IV | 1.8T | Use vehicle selector to confirm fitment | |
| Volkswagen | Jetta I | 8v | Use vehicle selector to confirm fitment | |
| Volkswagen | Jetta II | 8v | Use vehicle selector to confirm fitment | |
| Volkswagen | Jetta III | 2.0 | Use vehicle selector to confirm fitment | |
| Volkswagen | Jetta III | TDI | Use vehicle selector to confirm fitment | |
| Volkswagen | Jetta IV | 1.8T | For vehicles with a 4-speed automatic or manual transmission only | |
| Volkswagen | Jetta IV | TDI | Seal between coolant flanges | |
| Volkswagen | Jetta IV GLI | 1.8T | For vehicles with manual transmissions only | |
| Volkswagen | New Beetle | 1.8T | Seals the coolant flange to the cylinder head | |
| Volkswagen | New Beetle | 2.0 | Use vehicle selector to confirm fitment | |
| Volkswagen | New Beetle | TDI | Use vehicle selector to confirm fitment | |
| Volkswagen | Passat B4 | 2.0 | Use vehicle selector to confirm fitment | |
| Volkswagen | Passat B4 | TDI | Use vehicle selector to confirm fitment | |
| Volkswagen | Passat B5 | 1.8T | Use vehicle selector to confirm fitment | |
| Volkswagen | Passat B5 | TDI | Use vehicle selector to confirm fitment | |
| Volkswagen | Scirocco I | 8v | Use vehicle selector to confirm fitment | |
| Volkswagen | Scirocco II | 8v | Use vehicle selector to confirm fitment |
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