GASKET – Fits Johnson/Evinrude 175-235 HP (Replaces OMC 323214, Sierra 18-2550, GLM 34460)
GASKET – Fits Johnson/Evinrude 175-235 HP (Replaces OMC 323214, Sierra 18-2550, GLM 34460) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
GASKET – Fits Johnson/Evinrude 175-235 HP (Replaces OMC 323214, Sie...
Product Details
This is a replacement GASKET – Fits Johnson/Evinrude 175-235 HP, designed specifically for V6 Crossflow engines. It serves as a big bore base gasket for powerhead installation, ensuring a precise seal for optimal engine performance.
It provides a direct interchange for GLM 34460, Sierra 18-2550, and OMC 323214, making it a reliable alternative for repairs and rebuilds.
- Installation Location: Powerhead
- Gasket Type: Big Bore Base Gasket
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| GLM | 34460 |
| Sierra | 18-2550 |
| OMC | 323214 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Rated HP | OEM Part No. |
|---|---|---|---|
| Johnson/Evinrude | V6 Crossflow | 175 | 323214/34460/18-2550 |
| Johnson/Evinrude | V6 Crossflow | 235 | 323214/34460/18-2550 |
Technical Specs
- Product Type
- Gasket
- Installation
- Powerhead
- Product Dimensions
- 13.0" L x 10.0" W x 1.06" H
- Weight
- 4.53 g (0.16 ounces)
- Other Technical Attributes
- Big Bore Base Gasket
What’s in the Box
- 1 x Gasket
Installation Notes
- Disconnect the battery and ground connection before beginning work.
- Drain engine coolant and other relevant fluids.
- Carefully remove any components obstructing access to the powerhead.
- Remove the old powerhead base gasket and thoroughly clean both mating surfaces of any residue or old material.
- Position the new gasket, ensuring it aligns perfectly with all bolt holes and passages.
- Reassemble the powerhead components according to the manufacturer's torque specifications.
- Refill all fluids to their recommended levels.
- Reconnect the battery, start the engine, and carefully inspect for any leaks.
Troubleshooting & FAQ
How do I confirm this gasket fits my engine?
Verify that your engine is a Johnson/Evinrude 175 or 235 HP V6 Crossflow model. Cross-reference your existing part number with the ones listed in the Part Number Matrix (GLM 34460, Sierra 18-2550, OMC 323214). Visually comparing your old gasket to the product images is also recommended.
What are common signs of a failed powerhead base gasket?
Symptoms of a bad base gasket include engine overheating, water mixing with oil (milky appearance), loss of compression, external water or oil leaks around the base of the powerhead, and poor engine performance.
Do I need to use sealant with this gasket?
Most modern gaskets like this one are designed to be installed dry. However, always consult your engine's specific service manual, as it may recommend a thin application of a specific sealant depending on the model and condition of the mating surfaces.
What does "Big Bore" mean for a gasket?
A "Big Bore" gasket is designed with larger openings to match engine blocks that have cylinders bored to a larger diameter than the original factory standard. This is common in higher horsepower models or modified engines.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost?
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns?
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
Payment & Security
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