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Intake Manifold for Yamaha WR400F WR426F YZ426F | 5SF-13597-00
Intake Manifold for Yamaha WR400F WR426F YZ426F | 5SF-13597-00
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Product Overview
Restore a secure and properly sealed connection between the carburetor and engine with this replacement carburetor intake manifold, designed for compatible Yamaha WR400F, WR426F, and YZ426F four-stroke dirt bikes.
This intake joint replaces an original manifold that has become cracked, hardened, loose, distorted, or difficult to seal after prolonged exposure to engine heat, vibration, fuel vapor, dirt, and off-road riding conditions.
A worn or damaged intake manifold can allow unmetered air to enter the engine, potentially contributing to unstable idle, hanging RPM, difficult starting, hesitation, inconsistent throttle response, or a lean-running condition.
Designed as a direct replacement for Yamaha 5JG-13597-00-00 and its updated replacement 5SF-13597-00-00, this intake manifold helps restore the original carburetor-to-cylinder-head connection when its dimensions and physical configuration match the original part.
Product Compatibility
| Brand | Model | Model Code | Year Range | Fitment Notes |
|---|---|---|---|---|
| Yamaha | WR400F | WR400FM | 2000 | Does not cover 1998–1999 WR400F |
| Yamaha | WR426F | WR426FN / WR426FP | 2001–2002 | Verify OEM number and original boot shape |
| Yamaha | YZ426F | YZ426FM / YZ426FN / YZ426FP | 2000–2002 | Standard competition models |
OEM intake diagrams list 5SF-13597-00-00 for the 2000–2002 YZ426F and 2001–2002 WR426F. The 2000 WR400F catalog also identifies the updated part as the replacement for 5JG-13597-00-00.
Model codes and specifications may vary by sales market. Confirm the original OEM number and physical dimensions before ordering.
OEM Cross-Reference Numbers
Yamaha
- 5JG-13597-00
- 5JG-13597-00-00
- 5JG1359700
- 5JG135970000
- 5SF-13597-00
- 5SF-13597-00-00
- 5SF1359700
- 5SF135970000
Yamaha identifies this part as Joint, Carburetor 3. The later 5SF-13597-00-00 supersedes the earlier 5JG-13597-00-00 in compatible applications.
Your original part does not need to display every number listed above. At least one compatible OEM number should match your motorcycle’s intake diagram or original manifold.
Specifications
| Specification | Details |
| Product Type | Carburetor Intake Manifold |
| Alternative Names | Carburetor Joint / Intake Boot / Carburetor Insulator |
| Application | Carburetor-to-Engine Intake Connection |
| Opening Diameter 1 | Approximately 40 mm / 1.57 in |
| Opening Diameter 2 | Approximately 49 mm / 1.93 in |
| Maximum Outside Diameter | Approximately 61 mm / 2.40 in |
| Fitment Type | Direct Replacement |
| Vehicle Type | Off-Road Motorcycle / Dirt Bike |
| Engine Type | Four-Stroke |
| Condition | New |
| Package Quantity | 1 Intake Manifold |
The supplied diameter conversions have been adjusted for accuracy:
- 40 mm is approximately 1.57 inches.
- 49 mm is approximately 1.93 inches.
- 61 mm is approximately 2.40 inches.
The two inner-diameter measurements may represent the carburetor side and engine side. Compare the exact measurement locations shown in the product images with the original intake manifold.
Key Features
- Model-Specific Yamaha Fitment: Designed for compatible 2000 WR400F, 2001–2002 WR426F, and 2000–2002 YZ426F motorcycles.
- Helps Prevent Intake Leaks: Restores a sealed connection between the carburetor and cylinder-head intake port.
- Durable Construction: Designed to withstand normal engine heat, vibration, fuel vapor, dirt, and off-road riding conditions.
- Replaces Aged Intake Joints: Suitable for replacing a manifold that has become cracked, hardened, distorted, or difficult to seal.
- Direct-Replacement Design: Fits the original intake position when the OEM number, openings, length, angle, and mounting configuration match.
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FAQ sur l'ajustement
Cette pièce conviendra-t-elle à mon modèle et à mon année spécifiques ?
Will this part fit my specific model and year?
This intake manifold is designed for compatible:
2000 Yamaha WR400F
2001–2002 Yamaha WR426F
2000–2002 Yamaha YZ426F
Your original intake manifold should use 5JG-13597-00-00, 5SF-13597-00-00, or a matching number format and have the same opening diameters, angle, mounting configuration, and overall shape.
Do not rely on the engine displacement or “WR/YZ four-stroke” model family alone when confirming compatibility.
Dois-je correspondre au numéro de pièce OEM ?
Yes. Matching the OEM number is one of the most reliable ways to confirm fitment.
This intake manifold replaces:
5JG-13597-00
5JG-13597-00-00
5SF-13597-00
5SF-13597-00-00
The later 5SF-13597-00-00 is the updated replacement for 5JG-13597-00-00 on compatible models.
If your original manifold displays 5BE-13597-01-00 or another different number, do not assume compatibility without comparing all dimensions and physical details.
À quels modèles ou situations cette pièce ne convient-elle pas ?
This intake manifold is not confirmed for:
1998–1999 Yamaha WR400F models using 5BE-13597-01-00
Yamaha YZ400F models
Yamaha YZ450F or WR450F models
Yamaha YZ250F or WR250F models
Motorcycles using a different intake-manifold OEM number
Motorcycles fitted with an aftermarket carburetor requiring different opening diameters
Engine-swapped or heavily modified motorcycles
Applications with a different manifold angle or mounting design
Fuel-injected motorcycles without this carburetor intake arrangement
The airbox-side joint identified as 5JG-1440F-01-00
Do not assume that visually similar Yamaha four-stroke intake joints are interchangeable.
Que dois-je vérifier avant de commander ?
Before ordering, confirm:
Motorcycle make and complete model
Exact production year
Model code
OEM number on the original intake manifold
Approximately 40 mm / 1.57 in opening diameter
Approximately 49 mm / 1.93 in second opening diameter
Approximately 61 mm / 2.40 in maximum outside diameter
Carburetor-side connection size
Engine-side connection size
Intake angle and orientation
Mounting-point locations
Clamp-groove positions
Vacuum-port configuration
Product photos compared with the original part
Also inspect the O-ring, carburetor clamps, vacuum hoses, airbox connection, fuel lines, and surrounding intake components for additional leaks or damage.