853780A1 Carburetor Repair Seal Kit
853780A1 Carburetor Repair Seal Kit is backordered and will ship as soon as it is back in stock.
Need help checking fitment?
Need help checking fitment?
Send us the product link, your engine brand, full model and serial number, and the reference on your original part. Include the year if known.
Shipping & delivery
Shipping & delivery
Have a delivery question? Include the part reference, quantity, destination country and postal code so we can check the shipping details for your order.
Returns & warranty support
Returns & warranty support
For help with an order or product issue, send your order number, part reference and a description of the issue. Include photos where relevant.
Product Overview
XR MARINE · CARBURETORS & REPAIR KITS
853780A1 Carburetor Repair Seal Kit
This XR Marine carburetor repair seal kit is referenced to Mercury Mariner OEM part number 853780A1 and is intended for carburetor repair and seal servicing. It provides replacement sealing components for servicing an existing carburetor rather than replacing the complete carburetor assembly. Confirm the complete kit reference number, including the A1 suffix, along with your exact engine model and serial number before purchase.
Product Specifications
Key product details for identification and comparison.
Fitment
The 853780A1 Carburetor Repair Seal Kit from XR Marine requires fitment confirmation against your exact engine model, serial number, and parts diagram for the Mercury Mariner applications listed below.
Match the full engine model designation and serial number on your identification plate against the entries below, and compare the complete OEM reference number 853780A1 including its suffix. Horsepower alone cannot confirm fitment, and the 25 Jet model must be checked separately from the standard 25 model.
Fitment to Confirm
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Brand: Mercury Mariner | Model: 25 (2 CYL.)(2-STROKE)(International) | Power: 25 HP | Stroke: 2-Stroke | Serial range: From 0N055505 | Conditions: Application scope: Reference; compatibility unconfirmed; Application brand scope: Mercury; Reference number: 853780A1; Diagram scope: Carburetor; International; 2-cylinder? Confirm fitment
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Brand: Mercury Mariner | Model: 25 Jet (2 CYL.)(2-STROKE)(International) | Power: 25 HP | Stroke: 2-Stroke | Serial range: From 0N088578 | Conditions: Application scope: Reference; compatibility unconfirmed; Application brand scope: Mercury; Reference number: 853780A1; Diagram scope: Carburetor; International; 2-cylinder? Confirm fitment
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Brand: Mercury Mariner | Model: 30 (2 CYL.)(2-STROKE)(International) | Power: 30 HP | Stroke: 2-Stroke | Serial range: From 0N055505 | Conditions: Application scope: Reference; compatibility unconfirmed; Application brand scope: Mercury; Reference number: 853780A1; Diagram scope: Carburetor; International; 2-cylinder? Confirm fitment
OEM & Part Number References
Use the complete reference number, including its suffix, when comparing parts. Reference numbers do not confirm that every version is interchangeable.
Installation Guide
General installation overview. Follow the service manual for your exact engine and carburetor configuration. Fuel-system work requires the appropriate skills and precautions.
- Verify identification and kit contents: Check your engine identification plate, serial number, and carburetor assembly against the service manual to confirm that OEM reference 853780A1 is required before starting disassembly.
- Prepare a safe workspace: Shut off the engine, allow it to cool completely, disconnect the battery or ignition lead, and shut off the fuel supply in a well-ventilated area away from ignition sources.
- Document routing and linkages: Record the position of all fuel hoses, throttle and choke linkages, and mounting hardware before removing the carburetor according to your service manual.
- Disassemble and inspect: Open the carburetor carefully on a clean work surface, remove the old seals and gaskets without scratching machined metal surfaces, and inspect passages for debris or corrosion.
- Match replacement seals: Compare each new seal or gasket from the kit directly against the original component removed from the carburetor to verify exact profile and port alignment.
- Reassemble per manual specifications: Install the matching kit components and reassemble the carburetor and linkages following the factory service manual procedures and fastener sequence.
- Check for fuel leaks and test operation: Restore the fuel supply and inspect all sealing surfaces for leaks before starting. Run the engine only with the proper cooling water supply connected, and shut down immediately if any fuel leakage or irregular throttle response occurs.
Before You Order
A careful fitment check helps you choose the right part the first time.
- Match the full engine model designation on the identification plate.
- Check the serial-number range and any model or version restrictions against your engine parts diagram.
- Compare the complete OEM reference number, including its suffix. Horsepower or appearance alone is not enough.
- Confirm the package contents and the quantity needed for your repair.
- Treat the 25 Jet model (serial 0N088578 and up) separately from the standard 25 model (serial 0N055505 and up), and verify International 2-cylinder 2-stroke carburetor diagram coverage.
Need help checking fitment? Have your engine identification details, the existing part number and clear photos ready when you contact XR Marine.
Ask XR Marine About FitmentWhy XR Marine
Carburetors are our focus. Fitment comes first.
XR Marine specializes in marine carburetors, carburetor repair kits and the related parts needed for these repairs. We keep our focus on this product line so that product information stays centered on the details that matter: engine applications, complete part-number references and what is included.
Use our individual fitment entries and part references to compare your application, then contact XR Marine if you need help before ordering.
Shipping
Free shipping on all orders. No minimum order value.
For questions about delivery to your destination or delivery timing, contact XR Marine before placing your order.
Contact XR Marine About ShippingLifetime Warranty
XR Marine provides lifetime warranty coverage for product quality defects. Normal wear and tear is excluded.
- Covered: product quality defects.
- Not covered: normal wear and tear.
Contact XR Marine for warranty assistance. Having your order details and a description of the issue available can help us understand your request.
Contact XR Marine About WarrantyFrequently Asked Questions
Answers to common questions about this product and its application.
What is the 853780A1 product from XR Marine?
It is an XR Marine Carburetor Repair Seal Kit referenced to Mercury Mariner OEM part number 853780A1. It is intended for carburetor repair and seal servicing rather than replacing a complete carburetor assembly.
Why are the Mercury Mariner 25, 25 Jet, and 30 models marked "Confirm fitment"?
The listed 2-cylinder, 2-stroke International entries (25 from serial 0N055505, 25 Jet from serial 0N088578, and 30 from serial 0N055505) are recorded as reference applications with unconfirmed compatibility. Always verify your exact serial number and carburetor parts diagram to confirm that 853780A1 is specified for your engine before ordering.
Can I order this kit based on 25 HP or 30 HP rating alone?
No. Horsepower alone does not identify the correct carburetor seal kit. For example, the 25 Jet model has a different starting serial number (0N088578) than the standard 25 model (0N055505) and must be checked separately using the full model designation and OEM number 853780A1.
Does the A1 suffix in 853780A1 matter when matching my part number?
Yes. Always match the complete OEM reference number 853780A1, including the A1 suffix, against your engine parts list or existing kit reference.
How can I check the exact components included in this seal kit?
Detailed item-by-item package contents are not listed on this page. Contact XR Marine before ordering if you need to confirm the exact supplied components and quantities for your repair.
What shipping and warranty policies apply to this order?
XR Marine offers free shipping on all orders with no minimum order value, along with lifetime warranty coverage for product quality defects (normal wear and tear is excluded).
Payment & Security
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