The 987 is a rewarding car, but its weak points depend heavily on era. The M96/M97 (987.1) carries the famous flat-six risks; the DFI 9A1 (987.2) trades most of them for a fuel-system concern.
987.1 engine (M96/M97)
- IMS bearing: can fail catastrophically. Worst on the earliest MY2005 Boxster (small single-row bearing); the 2006-2008 bearing and all Caymans are much lower risk. Watch for metal in the oil filter.
- Bore scoring: vertical liner scoring, markedly worse on the M97 3.4 S. Cold ticking knock, oil consumption, sooty exhaust.
- RMS: rear main seal weeps at the bellhousing; on manuals it can foul the clutch.
- AOS: air-oil separator diaphragm fails, causing white startup smoke, rough idle, and high oil consumption (~$400-$900).
987.2 engine (9A1)
- HPFP: a batch of Bosch high-pressure fuel pumps caused hard starts, stalling, and limp mode; many were covered under a service action. No IMS, and bore scoring is rare.
Cooling (all 987)
- Water pump (plastic impeller), coolant expansion tank cracking, and on 987.1 the front plastic coolant pipe seals are all age/heat wear items.
Suspension, electrical, body (all 987)
- Front control-arm "coffin arm" bushings clunk over bumps.
- Ignition coils crack and misfire; replace all six with plugs.
- A/C condensers corrode and puncture behind the front bumper.
- Boxster convertible-top microswitches and drive cables stall the top mid-cycle.
Recalls
Verify by VIN at recall.porsche.com. A narrow MY2012 seat-belt-anchor recall (NHTSA 11V409) applies to a specific build window.
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