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What size is the crank pulley bolt on a Honda Accord?

There isn’t a single universal size for the crank pulley bolt on a Honda Accord. The bolt’s diameter, thread pitch, and head size vary by engine and model year. To be sure, check the exact specification for your car's engine code in the factory service manual or OEM parts database.

Understanding the variability by engine and year

Honda Accord has multiple engine options across generations. The crank pulley bolt is selected to fit the crankshaft journal and pulley design of each engine. Using the wrong bolt or an incorrect torque can damage the engine. Always verify the exact specification for your engine code (for example, the F-series 2.0/2.4, J-series V6, etc.).

How to determine the correct bolt size for your car

Use these steps to identify the correct bolt size and torque specification for your specific Accord:

Check the vehicle identification, engine code, and model year, which are shown on the VIN plate and owner manual.

Consult the official Honda service manual or Honda Parts website for your engine code and see the crankshaft pulley bolt specification and torque.

Measure the bolt if you have access to the removed bolt: determine the head size (often 14mm or 17mm hex) and the thread diameter and pitch by comparing to standard bolts or using a thread gauge.

When in doubt, replace with an OEM bolt of the same grade and length rather than using a generic bolt.

In practice, many mechanics confirm the bolt by consulting the service manual for the exact model/year. This ensures you’ll have the correct bolt diameter, thread pitch, length, and the proper torque value for removal and re installation.

Common installation considerations

When replacing or re tightening the crank pulley bolt, note torque and any required angles or steps, as specified by Honda for your engine. The process may require locking tools to hold the crank at top dead center, use of a torque wrench, and following the service procedure for the timing belt or chain system.

Torque: The bolt is typically specified in the service manual; many Honda engines require a high torque value (often around 100-170 Nm) plus an optional angular tightening step, but you must refer to the exact spec for your engine.

Locking the crank: Upon loosening the bolt, you may need a crankshaft pulley locking tool to prevent rotation.

Heat and safety: Use penetrating oil, ensure the vehicle is securely supported, and keep hands away from belts and fans during work.

Bottom line: the bolt size is engine-specific, so verify with official documentation for your Accord’s exact year and engine code.

Summary

There is no single crank pulley bolt size for all Honda Accords. The correct bolt size, head size, thread pitch, length, and torque depend on the engine type and year. Start with the engine code, consult the official service manual or OEM parts catalog, and confirm the exact specification before removal or replacement. If you share your Accord’s year and engine (for example, 2008 Honda Accord with a 2.4L engine), I can help pinpoint the precise bolt size and torque specification.

What size socket is a Honda crank bolt?

19mm
19mm Crank Bolt Socket
Compatible with Honda engines that use a 19mm hex pulley damper bolt or other 19mm applications.

What size is the crankshaft pulley bolt on a 2007 Honda Accord?

16 x 49mm
Crankshaft Pulley Bolt - 16 x 49mm - Compatible with 1993-2017 Honda Accord.

What size is a crankshaft pulley bolt?

The crankshaft pulley bolt size varies by vehicle, so you must check your specific car's make, model, and year for the correct size. Common bolt sizes range from SAE (such as 15/1615 / 1615/16 inch) to metric (like 191919 mm or 232323 mm). It's also crucial to know the correct thread pitch and whether the bolt has standard right-hand or reverse left-hand threads for your engine.

This video demonstrates how to remove a crankshaft pulley bolt, including some tips for different types of engines: 53sMerryfranksterYouTube · Aug 15, 2023
Common sizes

SAE: 15/1615 / 1615/16 inch is a common size on some older vehicles, such as certain GM models.
Metric: Common metric sizes include 191919 mm and 232323 mm, though some may require a 222222 mm socket.
Specific examples: Some GM LS engines use a 161616 mm x 2.02.02.0 thread pitch bolt.

Important considerations

Thread type: Some bolts are reverse-threaded, so it's critical to verify the thread direction for your engine.
Thread pitch: In addition to the diameter, the thread pitch is vital. For instance, some GM LS engines use a 161616 mm x 2.02.02.0 thread pitch.
Bolt type: It's best practice to replace the crankshaft pulley bolt each time you remove it, as it is often a torque-to-yield fastener.
Torque specifications: Always tighten the new bolt to the manufacturer's specified torque value. Over-tightening can damage the crankshaft or pulley, while under-tightening can lead to slippage.

This video explains why you should not reuse a crankshaft pulley bolt: 33sGilk The Great | HoodBilly Garage YouTube · May 22, 2025

What size is the crank bolt on a 2015 Honda Accord?

Crankshaft Pulley Bolt - 16 x 49mm - 1993-2017 Honda Accord - Genuine W0133-2537567.

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.