Volvo Penta 3857005 21130692 SX-M 23 Teeth Upper Gear Set OEM 0720

Volvo Penta SX-M Upper Gear Set – OEM Part # 3857005 / 21130692

You are purchasing a genuine Volvo Penta OEM Upper Gear Set, part numbers 3857005 and 21130692 (also cross-referenced as 3842271 and 3851203), removed together from a running sterndrive unit in good working condition. Used in the Volvo Penta SX-M upper gear unit.

What's Included:

• Upper Gear Set (Forward & Reverse Gears) – Part # 3857005 / 3842271
• Upper Gear Set – Part # 21130692 / 3851203
• Driven gear tooth count: 23

Fitment: Fits Volvo Penta and OMC Cobra SX sterndrive upper units, including but not limited to:

• SX-M / SX-M1 / SX-MTD / SX-MTD3 — 1.51:1 and 1.78:1 gear ratios
• DP-SM / DP-SM 1.78
• Compatible with select OMC Cobra SX upper units

Please verify your OEM part numbers and gear tooth counts against your originals before purchasing to ensure correct fitment. Gear ratios and tooth counts vary across SX models — confirming the match before ordering is strongly recommended. If you are unsure, message us with your sterndrive model and gear ratio and we will do our best to help confirm compatibility.

Condition: Used, in good working condition. Normal signs of wear consistent with age and use. Please review all photos carefully — they are part of the description and show the actual item you will receive.

Shipping: Item ships quickly after payment is received. All items are carefully packaged to prevent damage in transit. Combined shipping is available on multiple purchases.

Questions? Message us anytime. We specialize in used marine engine and outboard parts and are happy to help you find what you need. Thank you for looking!

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