Honda motorcycle parts
Choose your model and year to see parts listed for your bike.
Choose your model and year to see parts listed for your bike.
1971 Honda CB450K · Air Filters & Vent Filters Buying guide
The chrome-cap filter is sold individually and asks for carburetor inlet outside-diameter measurement. Its description notes that jetting and tuning changes may be needed, without providing jet sizes or full filter-body dimensions. Resolve those missing installation details where they matter.
The specified sizing check is the carburetor inlet outside diameter. Use the actual mounting surface on the carburetor retained or planned for the installation. A different carburetor fitted during earlier work needs its own check even when the motorcycle year is unchanged.
The filter gives no recommended pilot or main size. The premium kit’s #125 main and #40 pilot are supplied kit values, while the separate #35 pilot is another metering choice. Check the fitted carburetor and modified intake before deciding which sizes are appropriate.
Measure the carburetor inlet outside diameter at the filter attachment surface. The internal bore is a different dimension. Compare the actual mounting location and ensure the filter body has room in the intended arrangement.
Confirm the overall body and cap dimensions needed by the available space. The description provides the mounting size but not a complete body drawing. Matching 49mm does not by itself establish clearance in a close custom layout.
The description warns that tuning and jetting changes may be necessary but does not specify settings. Determine those needs from the installed carburetor and intake setup before choosing jets. The filter’s listed motorcycle application is not a calibration specification.
Send your model and year, plus photos of your existing part and any changes to the original setup.
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