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608111 - Vacuum Unit

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- €69,00
€69,00
€69,00 - €69,00
€69,00
Genuine Part
Genuine: Original manufacturer part. This product is the original part designed and produced by the vehicle manufacturer.
Vacuum Unit for the ignition distributor, forming part of the vacuum advance mechanism.

Mounted on the side of the distributor, the unit senses inlet manifold vacuum and advances or retards the ignition timing according to engine load to optimise spark timing across the operating range on the four-cylinder petrol engine. The internal diaphragm acts on the distributor baseplate through the connecting link.
Vehicle Model Land Rover Series 2 and 3
Fitment Notes SERIES II 1958-1961 — 2.0 Petrol engine
SERIES II/IIA 1958-1971 — 2.25 Petrol engine
Alternative Codes
608111269989502286

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Frequently asked questions

What is the vacuum unit (608111) and what does it do?
The vacuum unit is the ignition distributor's vacuum advance capsule on Land Rover Series II and IIA 2.0 and 2.25 petrol engines. It senses inlet manifold vacuum and advances or retards the ignition timing with engine load, optimising spark timing across the rev range. It mounts on the side of the distributor.
Which engines does the vacuum unit fit, and what are its alternative part numbers?
This vacuum unit fits Series II (1958-1961) 2.0 petrol and Series II and IIA (1958-1971) 2.25 petrol engines. It's also listed under part numbers 269989 and 502286. Confirm your distributor type before ordering, since vacuum advance capsules vary between distributors.
Why does the vacuum unit fail?
The vacuum unit typically fails when its internal diaphragm splits or perishes with age, so it no longer holds vacuum. Symptoms usually include poor throttle response, pinking under load, or weak acceleration as the timing stops advancing. Applying vacuum to the capsule and checking it holds confirms whether it's failed.