YP100 Intake Manifold

Brand: Mortch Motor
Product Code: MIYP100-5090A

Product Viewed: 575

Availability: Pre-Order🔔

Weight: 0.14kg

Packing Size: 12.00 x 14.00 x 5.00cm

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US$2.19

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🔧 Yamaha 100 Intake Manifold

📦 Part Number: MIYP100-5090A

🔩 90° Bend · Single Vacuum Fitting · JOG 100cc LY149QMG

📍 Installation Position: Between Carburetor and Cylinder Head

✅ Durable Rubber Construction · Direct Replacement · Prevents Lean Conditions

📋 Product Overview

This product is a Yamaha 100 Intake Manifold, part number MIYP100-5090A. It features a single vacuum fitting and is designed for 100cc LY149QMG engines, connecting the carburetor to the cylinder head.

If your engine is hard to start or running lean, it may be time for a new intake manifold. A scooter intake manifold may develop cracks over time, allowing air to get in and causing your scooter's engine to run too lean. Once the manifold cracks it will need to be replaced.

✅ Quality Assurance: Manufactured from high-quality rubber compounds, precisely molded to OEM specifications for a perfect fit and reliable sealing.

📐 Specifications

🔖 Part Number: MIYP100-5090A

🏷️ Product Name: Intake Manifold

🔧 Compatible Engine: 100cc LY149QMG

📐 Bend Angle: 90°

💨 Vacuum Fitting: Single air injection pipe

📏 Mounting Holes: 50mm (center to center)

⭕ Inside Diameter: 19mm / 27mm

📍 Installation: Between Carburetor & Cylinder Head

🔧 Mechanic's Note

Why should you pay attention to the intake manifold?

The rubber on the intake manifold can get old and crack, causing the engine to run poorly and not stay at idle.
Cracks allow unmetered air to enter the engine, creating a lean condition that can cause hard starting, rough idle, and poor performance.
This is an easy way to fix these issues — simply replace the cracked manifold with a new one.
Recommendation: Inspect the manifold regularly for signs of aging or cracking, especially on high-mileage scooters.

🏍️ Compatible Models & Engines

This intake manifold (MIYP100-5090A) is compatible with the following models and engines:

Yamaha JOG 100cc · 4-Stroke (LY149QMG)
Yamaha RS100 · 4-Stroke
Linhai LY149QMG Engine
Other scooters equipped with 100cc LY149QMG series engines

📌 Fitment Note: This manifold features a 90° bend with a single vacuum fitting. Please verify that your original manifold has 50mm mounting holes and the correct inside diameter (19mm/27mm) before purchase. If your model is not listed, please contact us for compatibility confirmation.

⚙️ Product Features

🔩 90° Bend Design: Engineered to fit the engine bay layout of JOG 100cc and similar scooters, ensuring proper carburetor alignment.
💨 Single Vacuum Fitting: Includes one air injection pipe port for vacuum-operated systems — a direct match for OEM configurations.
📏 Precision Dimensions: 50mm mounting hole spacing, 19mm/27mm inside diameter for a perfect fit to the cylinder head and carburetor.
🔥 Durable Rubber Construction: Made from high-quality, oil-resistant rubber that withstands engine heat and vibration.
🔄 Direct Replacement: Fully compatible with the original factory manifold — simple bolt-on installation with no modifications needed.
🛡️ Prevents Lean Conditions: Restores proper sealing, eliminating unmetered air entry that causes hard starting and rough running.

✅ Typical signs that the intake manifold needs replacement:
• Engine is hard to start, especially when cold.
• Rough or unstable idle — engine won't stay at idle.
• Engine runs lean (lean condition) — may backfire or hesitate on acceleration.
• Visible cracks, dry rot, or hardening of the rubber manifold.
• Hissing sound near the intake area indicating an air leak.
Replacing a cracked or aged manifold promptly restores proper air-fuel mixture and engine performance.

✅ Installation Tips:
1. Ensure the engine is cool, then remove the air filter box and carburetor for access.
2. Remove the old intake manifold by unscrewing the mounting bolts at the cylinder head.
3. Clean the mating surface on the cylinder head, removing any old gasket residue or debris.
4. Install the new manifold with a fresh gasket (sold separately — part MIYP100-5090B).
5. Tighten the mounting bolts evenly in a crisscross pattern to ensure a proper seal.
6. Reattach the carburetor, vacuum lines, and air filter box.
7. Start the engine and check for air leaks (use carburetor cleaner spray around the manifold joints).
We recommend replacing the intake manifold gasket at the same time for a complete, leak-free installation.

⚠️ Important Notice: This product is a Yamaha 100 Intake Manifold, part number MIYP100-5090A. Features a 90° bend with a single vacuum fitting. Designed for 100cc LY149QMG engines. Mounting holes: 50mm (center to center). Inside diameter: 19mm/27mm. Images are for reference only; actual product may vary. We recommend inspecting your original manifold for proper fitment before purchase.

🔧 Compatibility Notice

Please verify that this part fits your specific vehicle model and year. Many vehicles share similar names but use different components depending on year or market region.
We strongly recommend cross-checking with your vehicle's owner's manual or contacting us for confirmation before placing your order.

📄 Product Disclaimer

Product images, measurements, and descriptions are for reference only. Slight variations in color or appearance may occur due to manufacturing batches or photography lighting—functional specifications remain identical to the ordered part.
Professional installation is mandatory. Mortch Motor assumes no liability for damages, injuries, or losses resulting from improper installation, misuse, unauthorized modification, or abnormal operation.

💰 Import Duties & Taxes

All listed prices EXCLUDE shipping costs, import duties, taxes, and customs clearance fees. These charges (if applicable) are determined and collected by your local customs authority and are solely the buyer's responsibility.
In case of return due to unpaid duties/taxes or refusal to clear customs, the buyer shall bear the original shipping cost, return shipping fees, and any associated administrative charges deducted from the refund.

📌 Order Confirmation: By completing your purchase, you acknowledge that you have read, understood, and agreed to all terms above. For any questions, please contact our support team prior to ordering.

Tags: Inlet Pipe, Intake Manifold, Manifold, Pipe