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Intake Manifold Boot for Honda CBR250 MC19 MC22 & CB400SF NC31 | OEM 16211-KY1-000
Intake Manifold Boot for Honda CBR250 MC19 MC22 & CB400SF NC31 | OEM 16211-KY1-000
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Product Overview
Maintain the screaming performance of your inline-four Honda with this premium Carburetor Intake Manifold Boot. Specifically engineered for the legendary CBR250 (MC19/MC22) and the iconic CB400 Super Four (NC31), this component replaces OEM #16211-KY1-000 and #16211-KAZ-000. High-revving engines depend on precise vacuum integrity; even a microscopic crack in your intake boots can cause erratic idling, poor throttle response, and engine overheating. This boot is crafted from professional-grade rubber to provide a factory-perfect seal for your high-performance carburetor bank.
Product Compatibility
Direct replacement for Honda 4-cylinder high-rev engines. Please verify your engine code before ordering.
| Brand | Model | Fitment Years | Engine / OEM Code |
| Honda | CBR250R / RR | 1988 – 1989 | MC19 / 16211-KY1-000 |
| Honda | CBR250RR | 1990 – 1994 | MC22 / 16211-KAZ-000 |
| Honda | CB400 Super Four | 1992 – 1998 | NC31 / 16211-KAZ-000 |
| Honda | CB400SF | 1992 – 1998 | NC31 / 16211-KAZ-000 |
Specifications
| Feature | Detail |
| OEM References | 16211-KY1-000 / 16211-KAZ-000 |
| Material | Premium Oil-Resistant Synthetic Rubber |
| Compatibility | 4-Cylinder Carbureted Engines |
| Durability | Heat-Resistant & Anti-Cracking |
| Fitment Type | Direct Bolt-on Replacement |
Key Features
- Premium Oil-Resistant Material: Constructed from high-quality synthetic rubber that is specifically formulated to resist degradation from modern fuels and engine oils.
- Maximum Durability: Engineered to withstand the extreme thermal stress of high-revving 250cc and 400cc inline-four engines, ensuring long-lasting usage without hardening or cracking.
- Stable Vacuum Integrity: Restores the airtight seal required for precise carburetor synchronization. Eliminates "air leaks" that cause hanging idles, backfiring, and inconsistent power delivery.
- Exact OEM Dimensions: Precision-molded to match factory specifications for the MC19, MC22, and NC31 models, ensuring a secure and easy installation on your carburetor rack.
- Engine Protection: By preventing unfiltered air from entering the combustion chamber, these boots help maintain the correct air-fuel ratio, protecting your pistons and valves from lean-run damage.
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Fitment FAQ
Will this part fit my specific model and year?
This intake manifold is intended for Direct replacement for Honda 4-cylinder high-rev engines. Please verify your engine code before ordering.; Fitment Years; Engine / OEM Code; Honda; CBR250R / RR; 1988 – 1989; MC19 / 16211-KY1-000. Listed year information includes 1988–1989, 1990–1994, 1992–1998, 1988, 1989. It is best matched to original part number(s) 16211-KY1-000, 16211-KAZ-000, 4-CYLINDER. Key physical/spec details from the product data include 250cc, 400cc. Use the compatibility table and product photos together before ordering.
Do I need to match the OEM part number?
Yes. Match your original part number to 16211-KY1-000, 16211-KAZ-000, 4-CYLINDER before purchase. For this intake manifold, also compare the bolt spacing, intake port shape, carb-side inner diameter, vacuum nipple position, and gasket shape. This is especially important for Honda CBR250/MC19/MC22/NC31 models because similar model names can use different parts by year or trim.
What models or situations does this part not fit?
Do not order this intake manifold for machines outside the listed compatibility, or for units with different port shapes, bolt spacing, carb-side diameter, or vacuum nipple locations. If your original part number does not cross-reference with 16211-KY1-000, 16211-KAZ-000, 4-CYLINDER, treat the fitment as unconfirmed. Model years outside 1988–1989, 1990–1994, 1992–1998, 1988, 1989 should be verified separately. Do not rely only on the model name or engine size.
What should I check before ordering?
Before ordering, compare your original part with the photos and check the bolt spacing, intake port shape, carb-side inner diameter, vacuum nipple position, and gasket shape. Confirm OEM/cross-reference number(s): 16211-KY1-000, 16211-KAZ-000, 4-CYLINDER. Recheck listed specs such as 250cc, 400cc. If any connector, mounting point, size, or year detail is different, confirm fitment before installation.