EXPLODED PARTS DIAGRAM

Mercury Mariner 4, 5, 6 HP Gearcase and Water Pump Parts Exploded Diagram

Use this Mercury and Mariner exploded diagram to identify piston, water pump, impeller, gear, bearing, oil seal and gasket shown for Mercury Mariner 4, 5, 6 HP. Match the numbered callout to the RECMAR reference and OEM cross-reference, then confirm the exact outboard and row-level limits before choosing a part.

Application / serial scope

No single page-level year or serial boundary is printed. Confirm the complete model, cylinder count, fuel system and serial, then apply every narrower row-level note before ordering.

Last reviewed
2 September 2026
Parts listed
—
Read more about the parts and fitment in this exploded diagram
100%
Exploded diagram artwork pending The final artwork for Mercury Mariner 4, 5, 6 HP Gearcase and Water Pump Parts Exploded Diagram is being prepared. Use the model, scope and OEM reference guidance on this page in the meantime. Exploded diagram artwork pending Use the model and OEM reference guidance below.

Parts schedule

Find your part

Add a part straight to your cart, or use Add to list to build a parts list from this diagram. Select a reference or part description to view full product details.

Loading parts…

Loading parts schedule…

Confirm the model, serial range and assembly details before ordering. The UN value is not the cart quantity.

Related diagrams and guides

Related exploded diagrams

Gearcase and Water Pump Parts shown in this diagram

The source pack contains 3 catalogue pages for Mercury Mariner 4, 5, 6 HP and covers piston, water pump, impeller, gear, bearing, oil seal and gasket. The heading defines this diagram route; it does not make every component interchangeable across every version.

Lower-unit checks

Confirm the exact model, shaft arrangement, gearcase type and serial. Similar-looking housings, gears, seals, impellers and pump kits are not automatically interchangeable.

How to use the exploded diagram

  1. Confirm the complete Mercury or Mariner model and serial details.
  2. Find the component and note its numbered callout.
  3. Match the callout to the RECMAR and OEM references in the schedule.
  4. Apply every cylinder, fuel-system, serial and configuration note.
  5. Compare the replacement with the removed part before installation.

Fitment and OEM reference guidance

No single page-level year or serial boundary is printed. Confirm the complete model, cylinder count, fuel system and serial, then apply every narrower row-level note before ordering.

An OEM number is an identification cross-reference, not proof that every scheduled item fits every outboard covered by the page heading. The selected row and exact reference control fitment.

Return to the Mercury and Mariner outboard parts hub, browse the complete exploded diagram library, or use the TMP Global Parts Finder when the exact application is unclear.

Frequently asked questions

Which parts are covered by this Mercury Mariner 4, 5, 6 HP diagram?

The source identifies piston, water pump, impeller, gear, bearing, oil seal and gasket within the gearcase and water pump parts route. Use the numbered callout and schedule to identify the required position.

Does every listed part fit every Mercury Mariner 4, 5, 6 HP version?

No. Individual rows can have narrower model, serial, cylinder, fuel-system or configuration limits. The exact row and reference control fitment.

How should I use an OEM reference from the diagram?

Use it as an identification cross-reference, then confirm the RECMAR reference, callout and row-level application note before ordering.

What should I check before selecting a Mercury or Mariner part?

Check the full model designation, horsepower, cylinder count, fuel-system version, serial details and the reference on the removed component.

What information should I send TMP Global for identification help?

Send the complete outboard designation and serial, the gearcase and water pump parts callout, the printed reference and clear photographs of the identification plate and removed part.