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Intake Manifold Boot Set for Yamaha XS400 (1977-1982) | OEM 2A2-13586-00 & 2A2-13596-00
Intake Manifold Boot Set for Yamaha XS400 (1977-1982) | OEM 2A2-13586-00 & 2A2-13596-00
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Product Overview
Restore the smooth, synchronized power of your vintage Yamaha twin with this premium Intake Manifold Boot Set. Specifically designed for the 1977–1982 XS400, this set includes both the left and right interfaces, replacing OEM parts #2A2-13586-00 and #2A2-13596-00. Old XS400 boots are notorious for cracking and causing "vacuum leaks," which lead to high idling, engine overheating, and poor throttle response. Our replacements feature an upgraded thickened wall design to provide superior durability and a permanent airtight seal.
Product Compatibility
Direct replacement for Yamaha 400cc Parallel-Twin engines. Please verify your model and year.
| Brand | Model | Fitment Years | Replaces OEM Part # |
| Yamaha | XS400 | 1977 – 1982 | 2A2-13586-00 (Left) |
| Yamaha | XS400 | 1977 – 1982 | 2A2-13596-00 (Right) |
| Yamaha | XS400S Special | 1980 – 1982 | 2A2-13586 / 2A2-13596 |
| Yamaha | XS400 Heritage | 1982 | 2A2-13586 / 2A2-13596 |
Specifications
| Feature | Detail |
| OEM References | 2A2-13586-00 / 2A2-13596-00 |
| Quantity | 2 Pieces (Complete Left & Right Pair) |
| Material | Reinforced High-Density Rubber & Anti-Corrosion Alloy |
| Design | Upgraded Thickened Pipe Wall |
| Fitment Type | Direct Bolt-on Replacement |
Key Features
- Upgraded Thickened Wall: Features a reinforced pipe wall construction that offers significantly better resistance to thermal expansion and collapsing under high vacuum pressure compared to standard aftermarket parts.
- Superior Shock Absorption: The specialized rubber compound is engineered to absorb engine tremors and high-frequency vibrations, protecting your carburetors and ensuring a stable fuel charge.
- Complete Performance Restoration: Eliminates air leaks that cause "lean-running" conditions, fixing symptoms like backfiring, hanging idle, and hard cold starts.
- Corrosion & Fuel Resistant: Manufactured from high-quality materials that resist degradation from gasoline, engine oil, and modern ethanol additives, preventing dry-rot and cracking.
- Perfect Twin-Cylinder Balance: Includes both manifolds to ensure both cylinders are sealed with identical pressure, allowing for easier carburetor synchronization and smoother engine operation.
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Fitment FAQ
Will this part fit my specific model and year?
This intake manifold is intended for Direct replacement for Yamaha 400cc Parallel-Twin engines. Please verify your model and year.; Fitment Years; Replaces OEM Part #; Yamaha; XS400; 1977 – 1982; 2A2-13586-00 (Left). Listed year information includes 1977–1982, 1980–1982, 1977, 1982, 1980. It is best matched to original part number(s) 2A2-13586-00, 2A2-13596-00, 1977-1982, 2A2-13586. Key physical/spec details from the product data include 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 2A2-13586-00, 2A2-13596-00, 1977-1982, 2A2-13586 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 Yamaha XS400 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 2A2-13586-00, 2A2-13596-00, 1977-1982, 2A2-13586, treat the fitment as unconfirmed. Model years outside 1977–1982, 1980–1982, 1977, 1982, 1980 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): 2A2-13586-00, 2A2-13596-00, 1977-1982, 2A2-13586. Recheck listed specs such as 400cc. If any connector, mounting point, size, or year detail is different, confirm fitment before installation.