Air Filter OEM-Style (Pair) | Honda CB350 / CL350 / SL350 K0

Description

Air Filters (OEM-Style, Pair) | Honda CB350 / CL350 / SL350 K0

If you’re keeping your CB350 in stock trim, you know the original air filters are getting hard to find. These are the OEM-style replacement pair — Japanese-made, left and right, a direct fit for the factory airbox.

Why You Need This

Keeping the stock airbox keeps your bike breathing the way Honda set it up — no pod conversion, no changes to your carb setup. The CB350 runs a paper element on each side of the frame, joined through a passage built into the frame, so the filters are left- and right-specific and you need both to service one bike. This pair includes both.

Specifications

Spec	Detail
Fits Models	CB350 / CL350 K0–K5 (1968–1973), SL350 K0 (1969–1970)
Sold As	Pair (one left, one right)

Installation

Difficulty: Beginner

Tools needed: A wrench for the connecting bolt.

1. Slip each filter into its side of the airbox — they’re left- and right-specific, so check that each goes on its correct side.
2. Join the two filters with the connecting bolt that runs through the frame passage. Don’t over-tighten it — snug is enough.
3. Make sure the circular seal is seated at the bottom of the battery box before you close everything up.

Keeping them clean: These are paper elements — clean them by tapping out the loose dust and blowing compressed air through from the inside. Don’t oil them; oil clogs a paper element and chokes off the airflow.

Frequently Asked Questions

Do these need to be oiled?

No. They’re paper elements, so oiling them clogs the media and restricts airflow. Clean them by tapping out the dust and blowing compressed air through from the inside.

How are these different from pod filters?

These OEM-style filters keep your stock airbox and factory look. Our angled boot pod filters are a performance conversion for bikes that have removed the airbox — a different setup. If your airbox is gone, see our angled boot pod filters instead.

How many do I need?

Two — one left and one right. This pair includes both.

Will these fit my SL350?

The SL350 K0 only. Later SL350s used a different intake setup.

Will these fit my CB360?

No — the CB360 / CL360 use different air filters. See our CB360 OEM-style air filters for that family.

You Might Also Need

• Angled Boot Pod Air Filters | CB350 / CL350 / SL350 — the performance pod conversion if you’ve removed the airbox
• Intake Manifold | CB350 / CL350 / SL350 K0 — fresh intake rubber while you’re servicing the intake
• Air Filter Boot Clamps | CB350 / CB360 / CB450 — stainless clamps for the airbox boots

Last updated: June 2026