Carburetor Intake Manifold Boots for Honda VFR400 RVF400 | 16211-ML0-720

Product Overview

Restore a secure, airtight connection between the carburetors and engine with these replacement carburetor intake manifold boots, designed for compatible Honda VFR400 and RVF400 motorcycles.

Made from durable rubber, these intake insulators help seal the connection between the carburetor assembly and cylinder-head intake ports. Replacing hardened, cracked, or leaking intake boots can help prevent unwanted air leaks that may contribute to unstable idle, hesitation, difficult starting, inconsistent throttle response, or a lean-running condition.

Designed as a direct replacement for Honda OEM 16211-ML0-720, these boots are suitable for compatible VFR400 NC21, NC24, NC30, and RVF400 NC35 applications.

Product Compatibility

Brand	Model	Model Code	Year Range	Fitment Notes
Honda	VFR400K / VFR400Z	NC21	1987–1991	NC21-1020013 and later; verify OEM number
Honda	VFR400R	NC24	1987–1988	Direct replacement for 16211-ML0-720
Honda	VFR400R	NC30	1989–1992	Confirm original intake boot configuration
Honda	RVF400R	NC35	1994–1996	Verify OEM number and physical shape

Replacement catalogs identify 16211-ML0-720 for VFR400 NC21, NC24, NC30, and RVF400 NC35 applications. Exact NC21 production coverage can vary by market, so the OEM number and original boot dimensions should be used as the final fitment references.

OEM Cross-Reference Numbers

Honda

• 16211-ML0-720
• 16211ML0720

Honda identifies 16211-ML0-720 as an Insulator, Carburetor.

The original part number should match your motorcycle or parts catalog before ordering.

Specifications

Specification	Details
Product Type	Carburetor Intake Manifold Boot / Insulator
Application	Carburetor-to-Engine Intake Connection
Material	Rubber
Color	Black
OEM Reference	16211-ML0-720
Vehicle Type	Motorcycle
Engine Platform	Honda 400cc V4
Fitment Type	Direct Replacement
Condition	New
Package Quantity	4 Intake Manifold Boots

Key Features

• Honda V4 Fitment: Designed for compatible VFR400 NC21, NC24, NC30, and RVF400 NC35 motorcycles.
• Helps Prevent Vacuum Leaks: Creates a sealed connection between the carburetors and intake ports to reduce unwanted air entering the engine.
• Durable Rubber Construction: Flexible rubber material helps withstand engine vibration, heat, and normal intake-system movement.
• Restores Intake Sealing: Ideal for replacing old boots that have become hard, cracked, split, distorted, or difficult to seal.
• Direct-Replacement Design: Matches OEM 16211-ML0-720 applications when the shape, dimensions, and mounting configuration are correct.