Springfield Marine Springfield 2-3/8" Adjustable Mainstay Package w/Locking Swivel is organized for powerhead & internal engine parts shoppers who need a clear, professional marine parts buying experience.

2-3/8" Adjustable Mainstay Package with Locking Swivel Package includes 2-3/8″ high-strength anodized aluminum air-powered height adjustment pedestal (500 newton cylinder) with 9″ round anodized base, and locking Trac-Lock™ swivel. Specifications: Adjusts: 14" to 20" Seat Mount: 3100031-LAR1

Fitment & Product Details

• Brand / Manufacturer: Springfield Marine
• Material: aluminum

• Search-optimized by brand, system, part type, and fitment cues.
• Verify compatibility with your original part number, engine model, and application before ordering.
• Built for boat owners, e-commerce shoppers, and professional marine service teams.