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BMW · Engine

BMW N54 Valve Seal Replacement

I'm tackling valve-stem-seal replacement on a BMW N54. This is internal engine work, not another external oil gasket, so the video gives you a better sense of the scope before you decide to dig into the valvetrain yourself.

335i / 135i / 535iJul 18, 202020,191 views
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What you’ll see in this one

Valve-stem seals can be discussed alongside smoke and oil use, but those symptoms can have other causes too. This page covers the seal-replacement project itself.

A closer look at this job

This BMW N54 video documents a valve-stem-seal replacement project. Valve-stem seals control oil passing along the valve guides, which is why they come up when people investigate certain oil-consumption and exhaust-smoke complaints. Those complaints do not prove a seal has failed. View the footage to understand the general area and access involved on the N54; exact service steps, holding methods and torque values need to come from the applicable BMW repair procedure. This is distinct from the N54 valve-cover or crankcase-vent-hose repairs.

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BMW N54 valve stem seal replacement335i N54 valve sealsBMW valve stem seals oil consumptionN54 smoke on startup valve sealsBMW N54 valvetrain seal repair

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