| Diagram | Fig. 3 — Engine: Contact Breaker, Timing Cover, Oil Pump, Oil Pressure Relief Valve · ref 29 |
| Subsystem | engine bottom |
| Listed in parts books | 1971–1973 |
Norton Oil Pressure Relief Valve Body
Body for the engine's oil pressure relief valve, part of the timing-side oil pump assembly.
NMT2059A is the body for the oil pressure relief valve, part of the engine's oil pump and timing cover assembly. It's listed in the catalog under the same figure group as the contact breaker, timing cover, and oil pump, which is where this valve lives on the motor.
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The relief valve body houses the spring-loaded piston that bleeds off excess oil pressure once the pump is putting out more than the system needs, protecting the oil pump drive and bearings from being over-pressurized. If you're chasing an oil pressure problem, this body along with its internal piston and spring is one of the usual suspects to pull and inspect.
Our catalog record on this one shows it appearing across a couple of listings from the early 1970s, but we don't have more detail beyond that. Call the shop and we'll confirm fitment before you order.
We've never carried this one. Tell us what you're after and we'll go looking — you'll get a price and photos before you commit to anything.
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