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SKU:
NLT1C01148
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Carburetor Diaphragm Pair for 1968-1973 Honda CB350 CL350 SL350
$32.99
In Stock
$32.99
Sale price
$32.99
Regular price
This two-piece aftermarket carburetor diaphragm kit fits compatible 1968-1973 Honda CB350, CL350, and SL350 Keihin constant-velocity carburetors.
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
- Honda CB350 K0-K5 (1968-1973)
- Honda CL350 K0-K5 (1968-1973)
- Honda SL350 K0 (1969-1970 compatible carburetors)
- Honda SL350 (1971-1973 only when carburetor and diaphragm dimensions match)
Product Overview
A Honda 350 twin can idle normally yet bog, flatten out, or refuse to rev when a vacuum-slide diaphragm is stiff, cracked, or pinholed. After five decades, the rubber may fail even when the carburetor looks clean from the outside.
The pair services both carburetors so slide lift stays balanced from cylinder to cylinder. Some SL350 years and carburetor versions differ, and installation requires removing the retained old diaphragm without damaging the slide. Compare carburetor type, slide, lip diameter, and 16022-287-024 reference.
Key Features & Performance
- Two diaphragms service both carburetors on the parallel twin
- Restores vacuum-slide response without replacing usable metal slides
- Fuel-resistant molded rubber construction
- Fits compatible Keihin CV carburetors on classic Honda 350 models
Replaces Part Numbers
- 16022-287-024
Common Uses
- Repairing hesitation when the throttle opens
- Replacing brittle or torn original diaphragms
- Balancing slide response during a twin-carburetor rebuild
Technical Specifications
- Product Type: CV carburetor slide diaphragm kit
- Quantity: 2
- Primary Application: Honda 350 twin carburetors
- Condition: New aftermarket replacement
Installation & Fitment
- Remove the old retaining ring carefully without cutting the slide
- Seat the diaphragm lip evenly in the carburetor groove
- Inspect both slides, springs, needles, and covers
- Synchronize the carburetors after installation and verify the exact carburetor version
Compatibility Notice
Northline Parts does its best to list all known compatible models. The correct part may fit an application that is not shown above. Model year, production date, serial number, engine or equipment specification, installed options, and previous repairs can change fitment. Match the original part, reference number, dimensions, connectors, mounting points, and product photos before purchase.
Frequently Asked Questions
Q: Can a torn diaphragm let the bike idle but not accelerate? A: Yes. The slide may not lift correctly when airflow demand increases.
Q: Are two diaphragms included? A: Yes. The pair is intended to service both carburetors.
Q: Do these replace a complete carb rebuild kit? A: No. Jets, gaskets, needles, floats, and seals are separate service items.
Q: Is this an original-equipment part? A: No. This is a new aftermarket product. Brand names and part numbers are used only to identify compatible applications.
Part Summary
keywords: Honda CB350 carburetor diaphragm, CL350 vacuum slide repair, SL350 carb diaphragm pair, 16022-287-024 replacement, classic Honda twin bogging fix
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, specifications, and application before purchase.