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Honda CRM250 Cylinder Base Gasket - 12191-KAE-740
Honda CRM250 Cylinder Base Gasket - 12191-KAE-740
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This is an authentic Honda cylinder base gasket, designated by part number 12191-KAE-740. It is precision-engineered to create a reliable seal between the crankcase and the cylinder block, which is essential for maintaining consistent compression in high-performance two-stroke engines. While this part is a specific component for the CRM250 series, it is widely recognized by enthusiasts and specialists in the vintage Japanese motorcycle market.
Vehicle Compatibility & Year Fitment
| Model | Compatible Years |
| Honda CRM250 (Mk2) | Various |
| Honda CRM250 (Mk3) | Various |
Technical Note: This gasket is specifically tailored for the CRM250 engine line (often referenced in relation to MD24 engine architectures). Always cross-reference your engine serial number, as Honda often uses model-specific gaskets for different iterations of the same displacement.
Fitment & Installation Details
When performing a top-end overhaul, this base gasket must be replaced to ensure an airtight seal and prevent potential pressure loss. Begin by meticulously removing all traces of the previous gasket from the mating surfaces on both the cylinder and the crankcase, ensuring the areas are perfectly clean and smooth. This gasket is intended to be installed dry; please refrain from applying liquid sealants, RTV, or adhesives, as these can interfere with the component's factory-specified thickness and sealing performance. Once the cylinder is placed, tighten all mounting hardware to the manufacturer’s torque specifications in a cross-pattern sequence to ensure uniform pressure across the entire gasket surface.
Important: Please ensure the part number matches your motorbike before purchasing. If you have any questions about the part or its compatibility, feel free to contact us. We’re here to help!
At Dmmotorcycles, we’ve specialized in vintage and vintage sports motorcycles and parts directly from Japan since 1998. We stock a wide selection of rare genuine and high-quality aftermarket parts and continually update our inventory to meet growing demand.
Looking for a specific part? Don’t hesitate to ask! We may have it in stock even if it’s not listed online. If not, we’ll do our best to source it for you.
We’re also happy to provide guidance on installation and offer excellent after-sales support to ensure your satisfaction.
Shipping Information
We ship worldwide, carefully inspecting and securely packing all parts to ensure safe delivery. Your order will be insured and shipped quickly, with the best available shipping option chosen for speed and reliability.
Please note:
- All parts are shipped from Cyprus (Europe).
- Customers outside the EU may incur additional import taxes based on the value of the item.
How we handle your order in 4 steps
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1. Order Verification
We confirm the order and make sure the correct part number, quantity, and any special requests match what’s on the sales confirmation
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2. Quality Check
Since our parts are new old stock we Inspect the parts for any defects, scratches, or missing components to ensure it meets quality standards. otherwise will notify you before proceeding with the order.
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3. Safe and Secure packaging
- Protective Wrapping: We use bubble wrap or foam padding to wrap the part, focusing on sharp edges or delicate components.
- Boxing: We place the wrapped part inside a sturdy box, filling gaps with packing materials to prevent movement.
- Sealing and Labeling: Securely tape the box and attach the shipping label, including orientation-specific markers like "Fragile."
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4. Finalizing of Shipment
We confirm the shipping address and contact details, give the package to the Post, keep the tracking number, and then send it to the customer along with the shipment notification.
