GENUINE MERCURY REPLACEMENT PART
TRIM TAB GEAR HOUSING (2-3/8 inch)
Part no. 31640Q4
₺ equivalent is calculated at the current CBRT rate (2026-10-23); 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?
Small fin behind the gearcase; balances steering torque and usually doubles as an anode. Replace when half consumed and reset to the same angle.
- Brand
- Mercury Marine
- Product group
- Anodes
- Part number
- 31640Q4
- Menşei
- CN
- Paket adedi
- 1.0
- Tehlike kodu
- 0.0
- Sınıf
- 97.0
- Mercury durumu
- ACT
- Paket ağırlığı
- .029 LBS (0.01 kg)
- Yükseklik
- 3.55 IN (9 cm)
- Replaces
- 316404
KNOW THE PART BETTER
Make the choice clear.
Do not pick anodes by shape alone: aluminum for salt water, magnesium for fresh water; the location (gearcase, trim cylinder, block) changes the part.
Explore inside the engineHave this ready when asking for a quote
A photo of the current part, its mounting point, the engine serial number and the water the boat sits in (salt/fresh).
Used on these engines
- R/MR/ALPHA ONE (Sterndrive) — GEAR HOUSING Propeller Shaft - RPos. 84 · qty 1 · go to diagram →
- R/MR/ALPHA ONE (Sterndrive) — GEAR HOUSING (PROPELLER SHAFT) - MRPos. 83 · qty 1 · go to diagram →