GOOFIT
Intake Manifold Interface Adapter for Yamaha XJR400 (1993-1999) | OEM 4HM-13586-00 & 4HM-13596-00
Intake Manifold Interface Adapter for Yamaha XJR400 (1993-1999) | OEM 4HM-13586-00 & 4HM-13596-00
Couldn't load pickup availability
Product Overview
Restore the smooth, high-revving soul of your Yamaha inline-four with the GOOFIT Carburetor Intake Manifold Set. Specifically designed for the 1993-1999 XJR400, this replacement set (OEM 4HM-13586-00 and 4HM-13596-00) is the essential fix for one of the most common maintenance issues on vintage XJR models.
As a high-performance air-cooled engine, the XJR400’s intake boots are subject to intense heat cycles. Over time, the original rubber becomes brittle and cracks, leading to vacuum leaks that cause "hanging idles," poor synchronization, and sluggish acceleration. Our manifolds are built from premium, heat-resistant materials to ensure a perfect airtight seal, giving your carburetors the stability they need to perform.
Product Compatibility
Direct replacement for early-generation Yamaha XJR400 4-cylinder engines. Please verify your OEM codes.
| Brand | Model | Fitment Years | Replaces OEM Part # |
| Yamaha | XJR400 | 1993 – 1999 | 4HM-13586-00 (Left/Inner) |
| Yamaha | XJR400S | 1994 | 4HM-13596-00 (Right/Inner) |
| Yamaha | XJR400R / RII | 1995 – 1999 | 4HM-13586 / 4HM-13596 |
Specifications
| Feature | Detail |
| OEM Reference | 4HM-13586-00-00 / 4HM-13596-00-00 |
| Material | High-Grade Aging-Resistant Synthetic Rubber |
| Quantity | Options for Individual or Full Set (4pcs) |
| Properties | Heat-Stable, Fuel-Resistant, High-Elasticity Sealing |
| Fitment Type | Direct Factory Performance Replacement |
Key Features
- Precision Vacuum Integrity: Engineered to provide a 100% airtight seal between the carburetors and the cylinder head. This is critical for achieving perfect carburetor synchronization and a rock-steady idle.
- Heavy-Duty Durability: Manufactured from high-quality, flexible rubber that resists the "dry-rot" and cracking common in 25+ year-old factory parts. Built for long-lasting use even under the high thermal radiation of an air-cooled 400cc engine.
- Restores Ride Quality: Eliminates lean-running conditions that cause engine hesitation, backfiring, and overheating. Installing new interfaces is the most effective way to restore the crisp throttle response of your XJR.
- Direct OEM Fitment: Designed as a "plug-and-play" replacement for the 4HM series. The internal dimensions and mounting hole spacing are precision-matched to the factory engine ports for a hassle-free installation.
- Excellent Sealing Properties: The high-elasticity material ensures that even under engine vibration, the manifold remains securely clamped, preventing any unmetered air from entering the system.
Share
Fitment FAQ
Will this part fit my specific model and year?
This intake manifold is intended for Direct replacement for early-generation Yamaha XJR400 4-cylinder engines. Please verify your OEM codes.; Fitment Years; Replaces OEM Part #; Yamaha; XJR400; 1993 – 1999; 4HM-13586-00 (Left/Inner). Listed year information includes 1993–1999, 1995–1999, 1993, 1999, 1994. It is best matched to original part number(s) 4HM-13586-00, 4HM-13596-00, 4-CYLINDER, 1993-1999. 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 4HM-13586-00, 4HM-13596-00, 4-CYLINDER, 1993-1999 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 XJR400 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 4HM-13586-00, 4HM-13596-00, 4-CYLINDER, 1993-1999, treat the fitment as unconfirmed. Model years outside 1993–1999, 1995–1999, 1993, 1999, 1994 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): 4HM-13586-00, 4HM-13596-00, 4-CYLINDER, 1993-1999. Recheck listed specs such as 400cc. If any connector, mounting point, size, or year detail is different, confirm fitment before installation.