What kind of bolts does Honda use?
Honda uses a range of metric, high-strength bolts across its vehicles, with many critical components secured by ISO metric fasteners rated 8.8, 10.9, or higher. The exact bolt type varies by model and subsystem, so there isn't a single universal bolt used throughout the entire lineup.
To understand this topic, it helps to know that Honda designs its assemblies with specific fasteners tailored to performance, durability, and assembly requirements. Bolt choices differ by engine, transmission, chassis, and bodywork, and they follow standard automotive practices for size, grade, coating, and thread pitch. Below is an overview of the standards, typical uses, and practical considerations when sourcing or replacing Honda bolts.
Overview of bolt standards used by Honda
Hondas rely on a mix of ISO metric fasteners, high-strength grades, and occasional specialty fasteners. Here are the core elements you’re most likely to encounter across many models:
- ISO metric bolt grades such as 8.8, 10.9, and 12.9 for high-strength applications
- Common thread sizes ranging from small M6/M8 up to larger M12–M16 for engine, suspension, and structural components
- Internal and external threads used in critical joints, often with torque-to-yield (TTY) or torque-plus-angle requirements for head and main bearing applications
- Coatings and finishes (zinc plating, black oxide, or stainless variants) to resist corrosion in exposed areas
- Product source typically OEM or OEM-equivalent fasteners, with aftermarket replacements aligned to standard metric specifications
Honda’s bolt strategy emphasizes reliability under vibration, heat, and load cycling, with replacement parts sometimes requiring new bolts rather than reusing old fasteners to preserve torque integrity and clamping force.
Common bolt types by system
Different subsystems use different classes of bolts. The following categories cover areas where bolt selection is most consequential for safety and performance.
- Engine and cylinder head bolts (often high-strength, may require torque-to-yield design and replacement when removed)
- Timing components and cover bolts (engine-specific, designed for precise torque and sealing)
- Transmission and torque converter bolts (high-strength, to withstand load and rotational stress)
- Exhaust and manifold bolts (often stainless or coated steel to resist heat and corrosion)
- Suspension and steering bolts (high-strength chassis fasteners for alignment and rigidity)
- Body and interior panel bolts (varied sizes, sometimes stainless or coated to prevent corrosion)
Because Honda uses many model- and part-specific fasteners, always refer to the service manual or parts catalog for the exact bolt type, grade, length, and torque specification for your vehicle.
How to source and replace Honda bolts safely
When repairing or servicing a Honda, follow disciplined sourcing and installation practices to maintain safety and performance. The steps below guide you through proper bolt replacement and installation.
- Consult the official service information or parts catalog to identify the exact OEM fastener required by your model and component.
- Use new bolts for critical joints (for example, head bolts or other high-stress connections) unless the service documentation explicitly permits reuse.
- Match the bolt grade (e.g., 8.8, 10.9, 12.9) and thread pitch to the specification, and choose the correct coating or material type for exposure conditions.
- Apply the proper torque specification and sequence, and observe any torque-to-yield requirements where specified, which may require specific angle tightening or special tools.
- Inspect mating surfaces for damage or contamination, and replace any washers, seals, or gaskets as recommended by Honda’s guidelines.
Following OEM specifications ensures clamping force, sealing integrity, and long-term reliability. If you are unsure about the correct bolt type or torque values, seek professional service or contact a Honda dealership parts department for guidance.
Why bolt choices matter for Honda owners
Bolts are not just fasteners—they are vital to engine integrity, drivetrain reliability, and overall safety. Using the right grade, size, and installation method helps prevent component failures, oil leaks, or joint loosening under vibration and heat. Honda’s engineering approach centers on dependable fasteners that harmonize with its advanced engine and chassis designs.
Summary
In short, Honda does not rely on a single universal bolt. Instead, it employs a spectrum of metric fasteners—most commonly ISO metric grades 8.8, 10.9, and higher—across engines, transmissions, chassis, and body components. Exact bolt types, lengths, and torque specs are model- and part-specific, so the best practice is to consult Honda’s service manuals or dealer parts catalogs for precise information. Proper replacement with the correct grade and torque is essential for safety, performance, and longevity.
How do I know if a bolt is sae or metric?
And this one says 10.9. Those are different grades of metric bolts. Pick up this large one here you can see that one says 12.9. So anytime you see 8.8 10.9 and 12.9 those are metric graded bolts.
What bolt pattern does Honda use?
Most modern Honda cars use a 5x114.3mm bolt pattern, including models like the Civic, Accord, and HR-V. However, some performance models and larger SUVs/trucks use a 5x120mm pattern, such as the Civic Type-R and models like the Odyssey and Pilot. It's essential to verify the specific bolt pattern for your model before purchasing wheels.
Common Honda bolt patterns
- 5x114.3mm: This is the most common pattern found on many Honda cars, including the Civic (excluding the Type-R), Accord, and HR-V.
- 5x120mm: This pattern is used on certain performance models and larger vehicles, such as the Civic Type-R, Odyssey, and Pilot.
Why you must verify
- Different models, different patterns: Even within the same model line, the bolt pattern can differ. For instance, the Civic Type-R uses a 5x120mm pattern while other Civics use 5x114.3mm.
- Vehicle age: Some older models may have different bolt patterns. For example, some 1990s models may use a 4x100mm pattern.
- Safety: Using the wrong bolt pattern can be a serious safety risk. It can cause the wheel to be unstable or even come off the vehicle.
How to find your Honda's bolt pattern
- Check your owner's manual: Your owner's manual should have the specifications for your vehicle's wheels.
- Look at the wheel: The bolt pattern is often stamped on the back of the wheel.
- Search online: Search online for your specific Honda year, make, and model to find its bolt pattern.
Does Honda use standard or metric?
Honda uses the metric system for its vehicles, including bolts, lug nuts, and wheel sizes. This is standard for most countries where Honda vehicles are produced or sold, and it is a crucial detail for anyone performing maintenance or repairs, such as needing metric sockets to work on the wheels.
- Bolts and hardware: Honda uses metric bolts, often stamped with markings for their size and thread pitch, such as an M12x1.5mm thread.
- Lug nuts: Honda lug nuts are metric, measured in millimeters for diameter and thread pitch.
- Wheels: Even wheel bolt patterns, while sometimes represented in inches for historical reference, are based on metric measurements (e.g., 5x114.3mm).
- Tools: To work on a Honda, you will need metric tools, such as sockets, wrenches, and torque wrenches.
What type of bolts do Hondas use?
Yes, almost all Honda bolts are metric. For example, the most common metric thread sizes of Honda bolts are M12x1. 5mm and M14x1. 5mm.
