Description

Martyr CMT-3841427Z is a genuine zinc trim/transom shield anode for selected Volvo Penta sterndrive applications. Current listings identify this part as a Volvo Penta transom shield anode and connect it to SX-A and DPS-A model sterndrives.

This is the zinc version for salt water use. Current Martyr dealer references also show matching material alternatives in the same family, with CM3841427A for aluminum and CM3841427M for magnesium depending on the water type and corrosion-protection needs.

Key Features

• Genuine Martyr zinc anode
• Part number: CMT-3841427Z / CM3841427Z
• Common application: Volvo Penta transom shield / trim shield anode
• Material: zinc
• Intended for salt water applications
• Current dimension references show approximately 93.98 mm x 93.98 mm x 38.10 mm.

Engine Compatibility
Current listings connect this anode to selected Volvo Penta SX-A and DPS-A sterndrives. Fitment should still be confirmed by the exact drive model and the existing anode shape before ordering.

Serial Number Fitment Notice
Fitment should always be confirmed by drive model and serial number before ordering. Matching the existing anode shape and the exact Volvo Penta sterndrive family is the safest way to protect fitment accuracy.

When This Part Needs Replacement
Replace this anode when:

• the anode has been significantly consumed
• corrosion protection is reduced
• haul-out inspection shows heavy material loss
• the original anode is cracked, loose, or near the end of service life

Installation Notes

• Use this zinc version for salt water service.
• For fresh water, current listings point to the magnesium version instead.
• Match the existing transom shield anode shape before installation.
• Replace before the anode is fully depleted for more reliable protection.

Replaces / Cross Reference Numbers

• CM3841427Z
• CMT-3841427Z
• Replaces Volvo Penta: 3888817
• Related material variants: CM3841427A, CM3841427M.

Parts Desk Insight
With sterndrive anodes, the most important check is not just the shape, but also the anode material for the water type. This zinc version is the right lane for salt water, while magnesium is the better fit for fresh water. Getting that choice right matters as much as the mounting shape.

Shipping: Ships same or next day for fast Canada wide shipping.