Manufacturer Part Number:
021-220-15/21A
Cross-Reference Part Numbers:
Solas Concord: SRZ-CD-15/21A
Engine: 1494cc Rotax 4-Tec 4-Cylinder 4-Stroke DOHC Supercharged — 255/260 HP
Supercharger: Roots-type with intercooler
Jet Pump Housing: 159mm diameter
Notes:
• 'IS' = Intelligent Suspension, 'AS' = Adjustable Suspension
• 15/21 pitch is stock OEM for 255/260 HP supercharged models
• NOT compatible with 300 HP models (161mm pump housing)
Specifications:
• Blades: 4
• Housing Diameter: 159mm
• Pitch: 15° start / 21° end (progressive pitch)
• Material: Stainless steel — corrosion-resistant marine grade
• Rotation: Counter-clockwise (standard Sea-Doo 4-Tec)
Progressive Pitch Design (15°/21°):
• Leading edge starts at 15° for aggressive water engagement under supercharged boost
• Trailing edge increases to 21° for maximum high-speed thrust on 255/260 HP engines
• Higher pitch range than NA models to handle the increased power of supercharged engines
Construction:
• Investment-cast stainless steel for superior durability and corrosion resistance
• Precision-balanced to reduce vibration and extend pump component life
• CNC-finished blade edges for maximum hydraulic efficiency
Installation Notes:
• Always inspect wear ring for scoring or excessive clearance before installing a new impeller
• Recommended wear ring clearance: 0.5mm or less — replace wear ring if gap exceeds 1.0mm
• Apply marine-grade anti-seize to impeller splines before installation
• Torque impeller nut to manufacturer specification — do not over-tighten
PRODUCT NOTICE:
As a parts distributor we mostly sell aftermarket parts (any OEM parts would be noted as such). Aftermarket parts are not sourced from the original vehicle or equipment manufacturer, but are designed to function the same as - if not better than - the original. All parts sold are new.
WARNING - This product may expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov
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