Description
Gecko AquaFlo FMXP2 Wet End (4.0HP, 6.3″) – 91041635
Product Overview
As a retailer of hot tub spare parts, I’m featuring this ultra-high-performance Gecko AquaFlo FMXP2 wet end, specifically engineered for 6.3″ configurations. This premium 4.0HP model represents the absolute pinnacle of power in the FMXP2 series.
Key Features
- Maximum-output 6.3″ configuration
- 2″ MBT (Male Buttress Thread) connections
- 56 frame compatibility
- Commercial-grade construction
- Precise bolt pattern design
- Complete component assembly
Technical Specifications
| Specification | Detail |
|---|---|
| Model Number | 91041635 |
| Horsepower Rating | 4.0 HP |
| Frame Size | 56 Frame |
| Connection Size | 2″ MBT |
| Bolt Pattern | 6.3″ (4-1/8″ top bolt spacing) |
| Housing Diameter | 6.3″ |
| Construction | Industrial-grade materials |
| Design Type | FMXP2 Series |
| Top Bolt Spacing | 4-1/8″ |
| Build Type | Commercial-grade construction |
Critical Sizing Note
This is specifically a 6.3″ wet end with precise measurements:
- Top bolt spacing: 4-1/8″ (6.3 designation)
- NOT compatible with 6.1 systems (4″ spacing)
- Complete pump replacement required if 6.1 sizing needed
Compatibility Information
- Specific to 56 frame motors
- 6.3″ configuration only
- 2″ plumbing systems
- FMXP2 series design
- 4.0HP ultra-high-performance applications
Important Installation Notes
- Critical to verify exact bolt pattern measurements
- Confirm 6.3″ specification match
- Check frame size compatibility
- Ensure proper alignment
- Follow mounting guidelines
Application Use
Ideal for:
- Commercial spa installations
- Ultimate flow requirements
- Large-scale systems
- Maximum-demand applications
- Professional installations
- Multiple high-flow jet configurations
Measurement Verification
Before ordering, confirm:
- Top bolt spacing (must be 4-1/8″)
- Overall housing diameter
- Frame size requirements
- Motor compatibility
- Plumbing specifications









