21657165 Propeller | Genuine Volvo Penta Part

🔧 Product Description

Type I is the aluminium Duoprop range for Aquamatic DPS and DPS-A sterndrives, the drives with straight propeller-shaft splines. The patented blade geometry and large active propeller diameter give optimal performance and fuel efficiency over the entire speed range, together with smooth running, excellent grip and manoeuvrability. Squeeze casting and a special high-strength aluminium alloy make Type I propellers stronger and more durable than traditional die-cast propellers, and four layers of paint give excellent anti-corrosion performance. This is the I5 rear propeller; the matching front propeller is 21260645, and the pair is also listed as set 21258485. Every set of Duoprop propellers is designed, tested and manufactured together, so the front and rear propellers of a dimension belong to each other.

🚤 Compatibility

• Engine Family: D, V, DPS
• HP Range: 130-220 HP

Full model list at the end of this description.

⚙️ Key Features

• Type I aluminium Duoprop rear propeller, dimension I5
• Four-blade right-hand rotation
• Pairs with front propeller 21260645; the complete set is 21258485
• Supersedes 21324315
• 4.99 kg
• Squeeze cast in high-strength aluminium alloy and finished in four layers of paint
• For DPS and DPS-A drives with straight propeller-shaft splines
• Engineered to optimize performance, durability and comfort.
• Patented blade geometry, large active propeller diameter.
• Strong and durable high strength aluminium alloy.
• Three-blade front propeller and four-blade rear propeller.
• Type I has straight splines - for DPS and DPS-A drives.
• Material: aluminium
• Fits: DPS, DPS-A (straight splines)
• Type: I5
• Set contains: set 21258485, front 21260645

🔌 Function

The rear propeller works with the matched front propeller to produce efficient counter-rotating thrust, strong acceleration and improved steering control.

⚠️ Common Signs of Failure

• Speed-related vibration through the hull and steering
• Loss of top speed with the engine at or above its rated revs
• Chipped, bent or curled blade tips and edges from contact damage
• Pitting and white oxide bloom on the aluminium blades and hub
• Line found behind the hub, often together with a weeping shaft seal

🛠️ Service Notes

• Renew or refurbish as a matched pair with the front propeller 21260645 - a damaged half against a new one leaves the drive out of balance
• The I3 rear propeller 21657163 carries the same published 4.99 kg, so weight does not separate the two - order by the dimension code
• Check the drive anodes and the propeller shaft seal, and clear any line from behind the hub, while the propeller is off
• Always use type F or FH stainless steel propellers in 6-cylinder diesel engines or engines exceeding 240 hp or capable of speeds above 38 knots (45 mph).
• Type I sets replace the earlier Type D sets. Do not mix Type D and Type I propellers - always use propellers of the same type and size on the drive, or on both drives in twin installations.
• Type IH is the matching range for DPS-B drives, which have helical (spiral) splines. A Type I propeller will not fit a DPS-B drive.
• Installation hardware for types D, I, IH, F and FH: rear propeller nut 21631162 (included in Type I propeller sets), front propeller nut 3851569.

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 21657165 → Supersedes 21324315

OEM / Related Numbers

• 21324315 earlier number superseded by this part
• 21258485 - Complete Type I5 front and rear propeller set
• 21260645 - Matching Type I5 front propeller
• 21631162 - Rear propeller nut
• 3851569 - Front propeller nut
• 3855516 - DPS Duoprop tool kit

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta 8.1GiC-J, 8.1GiC-JF, 8.1GiCE-JF, 8.1GiCE-J, 8.1GiCE-M, 8.1GiCE-P, 8.1GiC-Q, 8.1GiCE-Q, 8.1GiE-KF, 8.1GiE-K, 8.1GiE-M, 8.1GiE-P, 8.1Gi-J, 8.1Gi-JF, 8.1GXiE-K, 8.1GXiE-KF, 8.1GXiE-M, 8.1GXiE-P, 8.1GXi-J, 8.1GXi-JF, 8.1OSi-J, 8.1OSi-JF, 5.7GXiC-J, 5.7GXiC-JF, 5.7GXiCE-JF, 5.7GXiCE-J, 5.7GXiCE-M, 5.7GXiC-P, 5.7GXiCE-P, 5.7GXi-J, 5.7GXi-JF, 5.7GXiE-KF, 5.7GXiE-K, 5.7GXiE-M, 5.7GXiE-P, 5.7GXi-P, 5.7OSi-300-J, 5.7OSi-300-JF, 5.7OSXi-J, 5.7OSXi-JF, 5.7Gi-300-J, 5.7Gi-300-JF, 5.7GiCE-300-M, 5.7GiE-300-N, 5.7Gi-300-N, 5.7GiE-300-P, 5.7Gi-300-P, 5.7GiC-300-J, 5.7GiCE-300-J, 5.7GiCE-300-JF, 5.7GiC-300-JF, 5.7GiC-300-P, 5.7GXiE-N, 5.7GXi-N, 5.7GiE-300-K, 5.7GiE-300-KF, 5.7GiE-300-M, 5.7GiCE-300-P, 4.3OSi-J, 4.3OSi-JF, 5.0GiC-J, 5.0GXiCE-JF, 5.0GXiCE-J, 5.0GXiC-JF, 5.0GXiCE-M, 5.0GXiC-P, 5.0GXiCE-P, 5.0GXi-J, 5.0GXi-JF, 5.0GXiE-K, 5.0GL-J, 5.0GL-JF, 5.0GXiC-J, 5.0GXiE-KF, 5.0GXiE-M, 5.0GXiE-N, 5.0GXi-N, 5.0GXiE-P, 5.0GXi-P, 4.3Gi-200-R, 4.3GI-Q, 4.3GL-J, 4.3GL-JF, 4.3GL-P, 4.3GXiE-M, 4.3GXi-P, 4.3GXiE-P, 4.3GXi-Q, 4.3GXiE-Q, 4.3GXi-J, 4.3GXi-JF, 4.3Gi-200-S
• Volvo Penta D3-130I-C, D3-220I-G, D3-130A-C, D3-160A-C, D3-140A-G, D3-170A-G, D3-200A-G, D3-220A-G, D3-140I-G, D3-190A-C, D3-170I-G, D3-200I-G, D3-160I-C, D3-190I-C, D3-140A-H, D3-170A-H, D3-200A-H, D3-220A-H, D3-170I-H, D3-200I-H, D3-220I-H, D3-140I-H
• Volvo Penta DPS-A, DPS-A OXI
• Volvo Penta V6-200-A