Intake Cover Gasket – Fits Mercury/Mariner 6-15HP Outboards (27-192031)

$5.44 $8.00

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Product Details

This Intake Cover Gasket (27-192031) is designed for Mercury and Mariner 2-stroke outboard motors, covering 6 HP, 8 HP, 9.9 HP, 10 HP, and 15 HP models manufactured from 1986 to the present. It creates a secure seal for the intake assembly, which is critical for preventing vacuum leaks and maintaining proper engine performance.

It serves as a direct cross-reference for Mercury part numbers 27-19203, 27-42369, and 27-192031, as well as Quicksilver 27-192031.

Made from a durable paper/fiber composite to ensure a reliable seal.
Precision-cut for a direct fit on the intake cover assembly.
Essential for preventing intake leaks and maintaining engine performance.

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Brand	Part Number
Mercury	27-192031
Mercury	27-19203
Mercury	27-42369
Quicksilver	27-192031

Engine & Model Compatibility

Confirm your engine model/year in the table below.

Brand	Model	Rated HP	Stroke	Years	OEM Part No.	Notes
Mercury/Mariner	6HP	6	2-Stroke	1986–Present	27-192031	Intake Cover Gasket
Mercury/Mariner	8HP	8	2-Stroke	1986–Present	27-192031	Intake Cover Gasket
Mercury/Mariner	9.9HP	9.9	2-Stroke	1986–Present	27-192031	Intake Cover Gasket
Mercury/Mariner	XR10	10	2-Stroke	1986–Present	27-192031	Intake Cover Gasket
Mercury/Mariner	10 Magnum	10	2-Stroke	1986–Present	27-192031	Intake Cover Gasket
Mercury/Mariner	10 Marathon	10	2-Stroke	1986–Present	27-192031	Intake Cover Gasket
Mercury/Mariner	10 Sea Pro	10	2-Stroke	1986–Present	27-192031	Intake Cover Gasket
Mercury/Mariner	10 Viking	10	2-Stroke	1986–Present	27-192031	Intake Cover Gasket
Mercury/Mariner	15HP	15	2-Stroke	1986–Present	27-192031	Intake Cover Gasket
Mercury/Mariner	15 Marathon	15	2-Stroke	1986–Present	27-192031	Intake Cover Gasket
Mercury/Mariner	15 Sea Pro	15	2-Stroke	1986–Present	27-192031	Intake Cover Gasket
Mercury/Mariner	15 Viking	15	2-Stroke	1986–Present	27-192031	Intake Cover Gasket

Technical Specs

Product Type: Gasket
Material: Paper/Fiber Composite
Application: Intake Cover
Dimensions: 19.5 cm × 9.0 cm × 0.1 cm (approx.)
Weight: 0.002 kg (approx.)
Compatibility: 2-Stroke Mercury/Mariner Outboards 6-15HP
OEM Part Number: 27-192031

What’s in the Box

1 x Gasket, Intake Cover (27-192031)

Installation Notes

Ensure the engine is off and cool to the touch before starting. Disconnect the battery for safety.
Locate and remove the intake cover. Keep track of all bolts and associated hardware.
Carefully remove the old gasket. Use a plastic scraper or gasket remover to clean both mating surfaces without scratching the metal.
Verify that both surfaces are completely clean, dry, and free of any old gasket material or sealant residue.
Align the new gasket onto the cover, ensuring all bolt holes line up perfectly.
Reinstall the intake cover and tighten the bolts in a crisscross pattern to the manufacturer’s specified torque to ensure even pressure.
Reconnect the battery, start the engine, and carefully inspect for any signs of vacuum leaks around the cover.

Troubleshooting & FAQ

How do I know if this gasket fits my engine?

This gasket is for Mercury/Mariner 6, 8, 9.9, 10, and 15 HP 2-stroke outboards from 1986–present. The best way to confirm fitment is to check your service manual or existing part for the OEM number. If it matches 27-192031, 27-19203, 27-42369, or Quicksilver 27-192031, this part will fit.

What are the signs of a failing intake cover gasket?

A failed intake cover gasket typically causes a vacuum leak. Symptoms may include a high or erratic idle, difficulty starting, reduced engine power, hesitation on acceleration, or a distinct hissing sound from the engine area while it's running.

Do I need to use sealant with this gasket?

These gaskets are typically designed for a dry installation. However, we always recommend consulting your engine’s official service manual, as some specific models or repair situations may call for a light application of a non-hardening sealant.

OEM vs. Aftermarket?

This listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, it is batch-inspected for consistency and reliability.

Shipping speed & cost?

We ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free; expedited options appear at checkout where available for your region.

Warranty & returns?

This part is covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact our support team with your order details. Returns are accepted within our standard window for unused items 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.

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