Powerhead Base Gasket – Fits Johnson/Evinrude 40-60 HP (Replaces 326468, 351018)
Powerhead Base Gasket – Fits Johnson/Evinrude 40-60 HP (Replaces 326468, 351018)

Powerhead Base Gasket – Fits Johnson/Evinrude 40-60 HP (Replaces 326468, 351018)

Vendor: JLM Marine
Availability: In Stock
Product Type: Gasket
$4.05
$4.00
$4.05
Subtotal: $4.05

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Powerhead Base Gasket – Fits Johnson/Evinrude 40-60 HP (Replaces 326468, 351018)

Powerhead Base Gasket – Fits Johnson/Evinrude 40-60 HP (Replaces 326468, 351018)

$4.00 $4.05
Powerhead Base Gasket – Fits Johnson/Evinrude 40-60 HP (Replaces 326468, 351018)

Powerhead Base Gasket – Fits Johnson/Evinrude 40-60 HP (Replaces 326468, 351018)

$4.00 $4.05
Description

Powerhead Base Gasket – Fits Johnson/Evinrude 40-60 HP (Replaces 326468, 351018)

This powerhead base gasket is designed for a precise fit on Johnson/Evinrude 40, 50, and 60 HP 2-Stroke outboard motors manufactured between 1976 and 2002. It serves as a crucial component for maintaining a proper seal between the engine powerhead and the adapter housing.

This part is a direct replacement for multiple OEM and aftermarket part numbers, including Marine Pro 326468, GLM 35340, Sierra 18-0128, Johnson/Evinrude 315852, 321510, 326468, 351018, and BRP 778187.

  • Installation Location: Mounts directly between the powerhead and adapter plate.
  • Sealing Integrity: Engineered from durable materials to prevent exhaust and water leaks.
  • Fuel Compatibility: Fully compatible with standard marine fuels.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Brand Part Number Superseded By Notes
Johnson/Evinrude 315852 321510
Johnson/Evinrude 321510 326468
Johnson/Evinrude 326468 351018
Johnson/Evinrude 351018 Current part number
BRP 778187 Also referenced as an OMC part number
Sierra 18-0128 Aftermarket Replacement
GLM 35340 Aftermarket Replacement
Marine Pro 326468 Aftermarket Replacement

Compatible Engine Models

Confirm your engine model/year in the table below. For Johnson/Evinrude owners, here’s a guide to help you identify your engine’s serial/model: Johnson/Evinrude Serial Number Guide.

Brand Model Rated HP Stroke Years OEM Part No. Notes
Johnson J40ECRM, J40ELCRM, J40RCRM, J40RLCRM, J40TECRM, J40TELCRM 40 2-Stroke 1985 326468
Johnson J40ECOB, J40ELCOB, J40RCOB, J40RLCOB, J40TECOB, J40TELCOB 40 2-Stroke 1986 326468
Johnson J40ECDE, J40ELCDE, J40RCDE, J40RLCDE, J40TECDE, J40TELCDE, J40TLCDE 40 2-Stroke 1987 326468
Johnson J40ECUD, J40ELCUD, J40RCUD, J40RLCUD, J40TECUD, J40TLCUD 40 2-Stroke 1988 326468
Johnson Multiple 40HP models (including J40AELCCS series) 40 2-Stroke 1989 326468
Johnson Multiple 40HP models (including J40ECEC series) 40 2-Stroke 1990 326468
Johnson Multiple 40HP models (including J40EESR series) 40 2-Stroke 1991 326468
Johnson Multiple 40HP models (including J40EEIA series) 40 2-Stroke 1992 326468
Johnson Multiple 40HP models (including J40EENJ series) 40 2-Stroke 1993 326468
Johnson Multiple 40HP models (including J40EETB series) 40 2-Stroke 1994 326468
Johnson Multiple 40HP models (including J40EERE series) 40 2-Stroke 1995 326468
Johnson Multiple 40HP models (including J40EEOD series) 40 2-Stroke 1996 326468
Johnson Multiple 40HP models (including J40ELEDS series) 40 2-Stroke 1997 326468
Johnson Multiple 40HP models (including J40ELEUC series) 40 2-Stroke 1998 326468
Johnson Multiple 40HP models (including J40ELECR series) 40 2-Stroke 1999 326468
Johnson Multiple 40HP models (including J40WRLEES series) 40 2-Stroke 2000 326468
Johnson Multiple 40HP models (including J40WRLSSC series) 40 2-Stroke 2001 326468
Johnson Multiple 40HP models (including J40WRLSIR series) 40 2-Stroke 2002 326468
Johnson J50ECSR, J50ELCSR 50 2-Stroke 1980 326468
Johnson J50BECIC, J50BELCIC 50 2-Stroke 1981 326468
Johnson J50BECTA, J50BELCTA, J50TELCTA 50 2-Stroke 1983 326468
Johnson J50BECRM, J50BELCRM, J50TELCRM, J50TLCRM 50 2-Stroke 1984 326468
Johnson J50BECOB, J50BELCOB, J50TELCOB, J50TLCOB 50 2-Stroke 1985 326468
Johnson J50BECDE, J50BELCDE, J50TELCDE, J50TLCDE 50 2-Stroke 1986 326468
Johnson J50BECUD, J50BELCUD, J50TELCUD, J50TLCUD 50 2-Stroke 1987 326468
Johnson J50BECCS, J50BELCCS, J50TELCCS, J50TLCCS 50 2-Stroke 1988 326468
Johnson Multiple 50HP models (including J50BECEC series) 50 2-Stroke 1989-1990 326468
Johnson Multiple 50HP models (including J50BEESR series) 50 2-Stroke 1991 326468
Johnson Multiple 50HP models (including J50BEEIA series) 50 2-Stroke 1992 326468
Johnson Multiple 50HP models (including J50BEENJ series) 50 2-Stroke 1993 326468
Johnson Multiple 50HP models (including J50BEETB series) 50 2-Stroke 1994 326468
Johnson Multiple 50HP models (including J50BEERE series) 50 2-Stroke 1995 326468
Johnson Multiple 50HP models (including J50BEEOD series) 50 2-Stroke 1996 326468
Johnson Multiple 50HP models (including BJ50BEEDS series) 50 2-Stroke 1997 326468
Johnson Multiple 50HP models (including BJ50RLEUC series) 50 2-Stroke 1998 326468
Johnson Multiple 50HP models (including BJ50ESECC series) 50 2-Stroke 1999 326468
Johnson Multiple 50HP models (including BJ50EEER series) 50 2-Stroke 2000 326468
Johnson Multiple 50HP models (including BJ50ELSSA series) 50 2-Stroke 2001 326468
Johnson Multiple 50HP models (including BJ50ELSIF series) 50 2-Stroke 2002 326468
Johnson J60ECSR, J60ELCSR 60 2-Stroke 1980 326468
Johnson J60ECIA, J60ECIH, J60ELCIA, J60ELCIH, J60TLCIA, J60TLCIH 60 2-Stroke 1981 326468
Johnson J60ECTB, J60ELCTB, J60TLCTB 60 2-Stroke 1983 326468
Johnson J60ELCRE, J60TLCRE 60 2-Stroke 1984 326468
Johnson J60ELCOD, J60TLCOD 60 2-Stroke 1985 326468
Evinrude E40ECRM, E40ELCRM, E40RCRM, E40RLCRM, E40TECRM, E40TELCRM 40 2-Stroke 1985 326468
Evinrude E40ECOB, E40ELCOB, E40RCOB, E40RLCOB, E40TECOB, E40TELCOB 40 2-Stroke 1986 326468
Evinrude E40ECDE, E40ELCDE, E40RCDE, E40RLCDE, E40TECDE, E40TELCDE, E40TLCDE 40 2-Stroke 1987 326468
Evinrude E40ECUD, E40ELCUD, E40RCUD, E40RLCUD, E40TECUD, E40TLCUD 40 2-Stroke 1988 326468
Evinrude Multiple 40HP models (including E40AELCCS series) 40 2-Stroke 1989 326468
Evinrude Multiple 40HP models (including E40ECEC series) 40 2-Stroke 1990 326468
Evinrude Multiple 40HP models (including E40EESR series) 40 2-Stroke 1991 326468
Evinrude Multiple 40HP models (including E40EEIA series) 40 2-Stroke 1992 326468
Evinrude Multiple 40HP models (including E40EENJ series) 40 2-Stroke 1993 326468
Evinrude Multiple 40HP models (including E40EETB series) 40 2-Stroke 1994 326468
Evinrude Multiple 40HP models (including E40EERE series) 40 2-Stroke 1995 326468
Evinrude Multiple 40HP models (including E40EEOD series) 40 2-Stroke 1996 326468
Evinrude Multiple 40HP models (including BE40EEDS series) 40 2-Stroke 1997 326468
Evinrude Multiple 40HP models (including BE40EEUC series) 40 2-Stroke 1998 326468
Evinrude Multiple 40HP models (including BE40EECR series) 40 2-Stroke 1999 326468
Evinrude Multiple 40HP models (including E40WRLEES series) 40 2-Stroke 2000 326468
Evinrude Multiple 40HP models (including E40WRLSSC series) 40 2-Stroke 2001 326468
Evinrude Multiple 40HP models (including E40WRLSIR series) 40 2-Stroke 2002 326468
Evinrude E50ECSR, E50ELCSR 50 2-Stroke 1980 326468
Evinrude E50BECIC, E50BELCIC 50 2-Stroke 1981 326468
Evinrude E50BECTA, E50BELCTA, E50TELCTA 50 2-Stroke 1983 326468
Evinrude E50BECRM, E50BELCRM, E50TELCRM, E50TLCRM 50 2-Stroke 1984 326468
Evinrude E50BECOB, E50BELCOB, E50TELCOB, E50TLCOB 50 2-Stroke 1985 326468
Evinrude E50BECDE, E50BELCDE, E50TELCDE, E50TLCDE 50 2-Stroke 1986 326468
Evinrude E50BECUD, E50BELCUD, E50TELCUD, E50TLCUD 50 2-Stroke 1987 326468
Evinrude E50BECCS, E50BELCCS, E50TELCCS, E50TLCCS 50 2-Stroke 1988 326468
Evinrude Multiple 50HP models (including E50BECEC series) 50 2-Stroke 1989-1990 326468
Evinrude Multiple 50HP models (including E50BEESR series) 50 2-Stroke 1991 326468
Evinrude Multiple 50HP models (including E50BEEIA series) 50 2-Stroke 1992 326468
Evinrude Multiple 50HP models (including E50BEENJ series) 50 2-Stroke 1993 326468
Evinrude Multiple 50HP models (including E50BEETB series) 50 2-Stroke 1994 326468
Evinrude Multiple 50HP models (including E50BEERE series) 50 2-Stroke 1995 326468
Evinrude Multiple 50HP models (including E50BEEOD series) 50 2-Stroke 1996 326468
Evinrude Multiple 50HP models (including BE50BEEDS series) 50 2-Stroke 1997 326468
Evinrude Multiple 50HP models (including BE50RLEUC series) 50 2-Stroke 1998 326468
Evinrude Multiple 50HP models (including BE50ESECC series) 50 2-Stroke 1999 326468
Evinrude Multiple 50HP models (including E40WREES series) 50 2-Stroke 2000 326468
Evinrude E60ECSR, E60ELCSR 60 2-Stroke 1980 326468
Evinrude E60ECIA, E60ECIH, E60ELCIA, E60ELCIH, E60TLCIA, E60TLCIH 60 2-Stroke 1981 326468
Evinrude E60ECTB, E60ELCTB, E60TLCTB 60 2-Stroke 1983 326468
Evinrude E60ELCRE, E60TLCRE 60 2-Stroke 1984 326468
Evinrude E60ELCOD, E60TLCOD 60 2-Stroke 1985 326468

Technical Specifications

Specification Value
Product Type Powerhead Base Gasket
Installation Between powerhead and adapter
Fuel Type Compatible with standard marine fuels
Housing Material Gasket material
Other Technical Attributes Designed to provide proper sealing between powerhead and adapter housing

Package Contents

1 x Powerhead Base Gasket, equivalent to part numbers 326468 and 351018.

Installation Guide

  1. Safety First: Ensure the engine is completely cool and disconnect the boat's battery before beginning work.
  2. Access the Powerhead: Remove the engine cowl and any other components that obstruct access to the powerhead mounting bolts.
  3. Detach the Powerhead: Carefully and evenly loosen and remove the bolts securing the powerhead to the adapter plate. Lift the powerhead off.
  4. Remove Old Gasket: Take off the old gasket and meticulously clean both mating surfaces. Use a plastic scraper and appropriate solvent to remove all traces of old gasket material, sealant, and corrosion.
  5. Install New Gasket: Position the new gasket correctly over the alignment dowels on the adapter plate. This gasket is designed to be installed dry; do not use any sealant unless explicitly required by your engine's service manual.
  6. Reinstall Powerhead: Carefully lower the powerhead back onto the adapter plate, ensuring it is properly aligned.
  7. Torque Bolts: Re-insert the mounting bolts and tighten them in a crisscross pattern to the manufacturer's specified torque values. This ensures even pressure across the gasket.
  8. Final Checks: Reassemble all previously removed components, reconnect the battery, and start the engine. Check carefully for any water or exhaust leaks around the new gasket.

Troubleshooting & FAQ

How do I confirm this gasket will fit my Johnson or Evinrude engine?
The most reliable method is to check your engine's model number and year against the comprehensive 'Compatible Engine Models' table on this page. You can also verify by matching the part number from your old gasket to the numbers listed in our 'Part Number Cross-Reference' section.

What are the signs that my powerhead base gasket has failed?
Common symptoms include visible water or exhaust leaks between the powerhead and the adapter plate, engine overheating due to water passage blockage, a noticeable loss of engine power, or poor compression readings.

Should I use sealant when installing this gasket?
No. This gasket is designed to create a seal on its own and should be installed on clean, dry surfaces. Using sealant can cause it to squish out of place, leading to blockages or an improper seal, unless your engine's specific service manual states otherwise.

OEM vs. Aftermarket?
This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

How fast do you ship and how much does it cost?
We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

What is your warranty and return policy?
This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

  • Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
  • This product is an aftermarket replacement part and is not an OEM component.
  • Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

  • Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
  • Fast Global Shipping: Free delivery worldwide in 5–15 days.
  • Direct from Manufacturer: Competitive pricing without compromising quality.
Shipping

We can ship to virtually any address in the world with free shipping available for most regions.

For our typical US and Canadian customers , our shipping timeframes are as follows:

  • Amazon FBA: orders will be delivered within 1-5 business days after placing the order (during certain special periods such as major promotions, Christmas, etc., the delivery time of Amazon FBA may be affected).
  • US warehouse shipment: orders will be delivered within 5 days after placing the order.
  • China warehouse shipment: orders will be delivered about 12 days after placing the order.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

About JLM Marine

Founded in 2002, JLM Marine has established itself as a dedicated manufacturer of high-quality marine parts, based in China. Our commitment to excellence in manufacturing has earned us the trust of top marine brands globally.

As a direct supplier, we bypass intermediaries, which allows us to offer competitive prices without compromising on quality. This approach not only supports cost-efficiency but also ensures that our customers receive the best value directly from the source.

We are excited to expand our reach through retail channels, bringing our expertise and commitment to quality directly to boat owners and enthusiasts worldwide.

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