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Service bulletin 402

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id637932
Published by NHTSA2002-12-09
Manufacturer's number402
Manufacturer's date2002-04-01
NHTSA componentENGINE AND ENGINE COOLING:ENGINE:GASOLINE

NHTSA's summary

SUBJECT REGARDING REPLACEMENT TOP PISTON RING MARKING. *TT

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Engine

Vehicles listed
ACURA SLX1996, 1997, 1998, 1999

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
Service Bulletin2017-08-15. Service bulletin. Service bulletin - The engine detonates (pings) when you accelerate lightly below 3,000 rpm. The programmed ignition timing causes a non-damaging engine detonation to occur when the intake air temperature is above 140°F (60°C).
0107022002-11-14. Service bulletin. THIS ARTICLE MENTIONS THERE IS NO T ON REPLACEMENT TOP PISTON RINGS. *TT
990211999-08-16. Service bulletin. CONDITIONS CONCERNING ENGINE PINGING WHEN YOU ACCELERATE LIGHTLY BELOW 3,000 RPM. *TT
990041999-05-07. Service bulletin. CONDITIONS ON MUFFLER RATTLING ABOVE 3,000 RPM. *TT