GENUINE MERCURY REPLACEMENT PART
GEAR LUBE PREM.(80W90)-1L@6 US
Part no. 858058QB1
₺ equivalent is calculated at the current CBRT rate (2026-10-22); prices exclude VAT
Check compatibility first.
The model name alone may not be enough; the same model uses different parts across serial ranges.
Verify by serial numberYour cart becomes a quote request for our sales team; no payment is taken.
What does this part do?
Lubricates the gearcase. Drain and refill at season end; milky oil means water intrusion — have the seals checked.
- Brand
- Mercury Marine
- Product group
- Oils & Chemicals
- Part number
- 858058QB1
KNOW THE PART BETTER
Make the choice clear.
Choose oil by the requirement in your engine's owner's manual (4-stroke 25W-40 / 10W-30, gear lube SAE 90 High Performance). Capacities per model are on the Mercury Service pages.
Have this ready when asking for a quote
Engine model, serial number, the oil grade from the manual and the quantity needed (litres).
Maintenance jobs that use this part
This part is on the material list of the Mercury maintenance plans below; the job page (Turkish) has the steps, capacities and the full list.
İlk servis
Büyük bakım
Kışlama ve depolama
Yıllık bakım