GENUINE MERCURY REPLACEMENT PART
SPARK PLUG
Part no. 803507
₺ equivalent is calculated at the current CBRT rate (2026-10-09); prices exclude VAT
This part has been superseded — current part:
8M0204682 → open current partCheck 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?
Ignites the fuel-air mixture in the cylinder. Worn plugs cause hard starting and misfires; inspect every 100 hours, replace as a set every 300 hours.
- Brand
- Mercury Marine
- Product group
- Spark Plugs
- Part number
- 803507
- Menşei
- JP
- Paket adedi
- 10.0
- Tehlike kodu
- 0.0
- Sınıf
- 33.0
- Mercury durumu
- SS
- Paket ağırlığı
- .09 LBS (0.04 kg)
- Yükseklik
- 1.3 IN (3.3 cm)
KNOW THE PART BETTER
Make the choice clear.
For spark plugs the engine name is not enough; the exact part code and gap (e.g. 0.8 mm) come from the manual. Quantity equals the cylinder count.
Explore inside the engineHave this ready when asking for a quote
Engine serial number, the code on the current plug and the cylinder count.
Used on these engines
- 25 HP EFI 3 CYL — Maintenance KitsPos. - · qty 3 · go to diagram →
- 9.9 HP EFI ProKicker 2 CYL (333cc) — Maintenance KitsPos. - · qty 2 · go to diagram →
- 25 HP EFI 3 CYL — Cylinder HeadPos. 19 · qty 3 · go to diagram →
- 9.9 HP EFI ProKicker 2 CYL (333cc) — Cylinder HeadPos. 21 · qty 2 · go to diagram →
- 5 HP Propane — Cylinder Head/BlockPos. 27 · qty 1 · go to diagram →