GOOFIT
Intake Manifold for Yamaha YZ80 1993–2001 YZ85 2002–2018
Intake Manifold for Yamaha YZ80 1993–2001 YZ85 2002–2018
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Product Overview
Restore a secure and properly sealed connection between the carburetor and reed-valve intake assembly with this replacement carburetor intake manifold, designed for compatible Yamaha YZ80 and YZ85 two-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 demanding motocross conditions.
A damaged intake manifold may allow unmetered air to enter the engine, potentially contributing to difficult starting, unstable idle, hanging RPM, hesitation, inconsistent throttle response, or a lean-running condition.
Designed to replace Yamaha 4ES-13565-00-00 and 5PA-13565-00-00 applications when the dimensions and physical configuration match the original part.
Product Compatibility
| Brand | Model | Year Range | OEM Reference | Fitment Notes |
|---|---|---|---|---|
| Yamaha | YZ80 | 1993–2001 | 4ES-13565-00-00 | Confirm mounting pattern and original manifold shape |
| Yamaha | YZ85 | 2002–2018 | 5PA-13565-00-00 | Standard and applicable large-wheel versions |
OEM intake diagrams identify 4ES-13565-00-00 as the carburetor joint on both the 1993 and 2001 Yamaha YZ80. Yamaha’s official 2002 YZ85 diagram uses 5PA-13565-00-00, and the same number remains listed on the 2018 YZ85.
Model codes and specifications may vary by sales region. Confirm the OEM number and physical dimensions before ordering.
OEM Cross-Reference Numbers
Yamaha YZ80
- 4ES-13565-00-00
- 4ES-13565-00
- 4ES135650000
- 4ES1356500
Yamaha YZ85
- 5PA-13565-00-00
- 5PA-13565-00
- 5PA135650000
- 5PA1356500
Yamaha identifies these parts as Joint, Carburetor.
The 4ES and 5PA numbers are associated with different model generations. They should not be described as an official Yamaha supersession chain, even though this aftermarket product may be designed to replace both configurations.
Specifications
| Specification | Details |
| Product Type | Carburetor Intake Manifold |
| Alternative Names | Carburetor Joint / Intake Boot / Carburetor Insulator |
| Inner Diameter | Approximately 35 mm / 1.38 in |
| Mounting-Hole Diameter | Approximately 6 mm / 0.24 in |
| Listed Mounting Measurement A | Approximately 57 mm / 2.24 in |
| Listed Mounting Measurement B | Approximately 47 mm / 1.85 in |
| Listed Mounting Measurement C | Approximately 75 mm / 2.95 in |
| Engine Type | Two-Stroke |
| Application | Carburetor-to-Reed-Valve Intake Connection |
| Fitment Type | Direct Replacement |
| Vehicle Type | Off-Road Motorcycle / Dirt Bike |
| Condition | New |
| Package Quantity | 1 Intake Manifold |
The original inch conversions have been adjusted for accuracy:
- 35 mm is approximately 1.38 inches.
- 57 mm is approximately 2.24 inches.
- 47 mm is approximately 1.85 inches.
- 75 mm is approximately 2.95 inches.
The three mounting measurements may refer to different bolt locations, flange dimensions, or diagonal reference points. Compare the exact measurement positions shown in the product images with the original manifold.
Key Features
- YZ80 and YZ85 Fitment: Designed for compatible 1993–2001 Yamaha YZ80 and 2002–2018 Yamaha YZ85 motorcycles.
- Helps Prevent Intake Leaks: Restores a sealed connection between the carburetor and reed-valve intake assembly.
- Durable Replacement Construction: Designed to withstand normal engine heat, vibration, fuel vapor, dirt, and off-road riding conditions.
- Replaces Aged Intake Joints: Suitable for replacing an original manifold that has become cracked, hardened, distorted, or difficult to seal.
- Direct-Replacement Design: Installs in the original position when the OEM number, openings, mounting pattern, and physical shape match.
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Preguntas frecuentes sobre compatibilidad
¿Esta pieza es compatible con mi modelo y año específicos?
This carburetor intake manifold is designed for compatible:
1993–2001 Yamaha YZ80
2002–2018 Yamaha YZ85
For a YZ80, the original intake joint should use 4ES-13565-00-00. For a YZ85, it should use 5PA-13565-00-00.
The original part must also match the listed 35 mm opening, mounting-hole pattern, flange shape, intake angle, and overall configuration.
This part is not automatically compatible with a 1998 YZ125 because Yamaha lists a different OEM intake-joint number for that model.
¿Necesito que coincida el número de pieza OEM?
Yes. Matching the OEM number is one of the most reliable ways to confirm compatibility.
For the YZ80, check for:
4ES-13565-00-00
4ES-13565-00
For the YZ85, check for:
5PA-13565-00-00
5PA-13565-00
Your original part does not need to display every formatting variation, but the complete base number should match.
Do not assume 4ES and 5PA are official superseding Yamaha numbers. Confirm the correct number for your specific model generation.
¿Qué modelos o situaciones no son compatibles con esta pieza?
This intake manifold is not confirmed for:
1998 Yamaha YZ125 using 4PE-13565-00-00
2019 or later Yamaha YZ85 using BR8-13565-00-00
Yamaha YZ65 models
Yamaha YZ125 models using a different intake-joint number
Yamaha YZ250 models
Four-stroke YZ-F, WR-F, or TTR models
Motorcycles fitted with aftermarket carburetors requiring a different opening
Engine-swapped or heavily modified motorcycles
Applications with different mounting-hole positions
Models with a different reed-valve or intake-flange design
Do not assume that all Yamaha YZ two-stroke motorcycles use the same intake manifold.
¿Qué debo verificar antes de hacer un pedido?
Before ordering, confirm:
Motorcycle make and complete model
Exact production year
OEM number on the original intake joint
Approximately 35 mm / 1.38 in inner diameter
Approximately 6 mm / 0.24 in mounting-hole diameter
Listed 57 mm / 2.24 in mounting measurement
Listed 47 mm / 1.85 in mounting measurement
Listed 75 mm / 2.95 in mounting measurement
Exact measurement locations shown in the product images
Carburetor-side opening diameter
Reed-valve-side opening and mounting pattern
Intake angle and orientation
Clamp position
Product photos compared with the original part
Also inspect the carburetor clamp, reed valves, reed cage, gaskets, airbox connection, fuel lines, and surrounding intake components for additional leaks or damage.