Zinc Driveshaft Housing Anode for MerCruiser Alpha One Gen II | 821629Q1

Zinc Driveshaft Housing Anode for MerCruiser Alpha One Gen II sterndrives. It mounts to the driveshaft housing and provides sacrificial zinc corrosion protection. Use product code CM821629 to identify the offered product. It uses MerCruiser 821629Q1 as an application cross-reference, but this offered version is zinc while the OEM 821629Q1 item is aluminium.

Selection warning: This is the zinc driveshaft-housing anode under product code CM821629. Match its material to the vessel's water type, existing anodes and corrosion-protection system. Do not substitute a different anode material automatically.

Product specifications

Key points

• Product code: CM821629
• MerCruiser application cross-reference: 821629Q1
• Confirmed application: Alpha One Gen II, serial number 0L100040 and later
• Assembly area: Driveshaft housing corrosion-protection points

Installation and selection context

The zinc driveshaft housing anode under product code CM821629 belongs to the driveshaft housing corrosion-protection points. Confirm material, water type and compatibility with the existing anode system.

Compatibility and fitment

The confirmed application for Zinc Driveshaft Housing Anode under product code CM821629 is the drive and serial scope shown above. The product may have other applications where the same product code and cross-reference are independently confirmed.

What to check before ordering

Confirm the zinc driveshaft housing anode under product code CM821629 against the component being replaced. Confirm material, water type and compatibility with the existing anode system.

Part numbers and cross-references

Before ordering

1. Confirm the sterndrive model and full serial number.
2. Check product code CM821629 and every recorded MerCruiser cross-reference.
3. Apply the ratio, side, material or serial-break instruction where one is stated.
4. Compare the replacement part with the component being removed.
5. Contact TMP Global with the drive serial and photographs if any identifier differs.

Frequently asked questions

What does CM821629 replace?

It uses MerCruiser 821629Q1 as an application cross-reference, but the material differs: this product is zinc and the OEM item is aluminium.

Does CM821629 fit every MerCruiser Alpha One Gen II drive?

The confirmed application for CM821629 covered here is the MerCruiser Alpha One Gen II upper driveshaft housing for serial number 0L100040 and later. For an earlier drive or another assembly, match the product code, OEM reference and technical data before ordering.

Where can I see this part in the exploded diagram assembly?

View the MerCruiser Alpha One Gen II upper driveshaft housing exploded diagram and locate reference 22.