Carburetor Carb BN40I-38-24 FOR Sea Doo 717 720 GS GTI GTS Sportster Challenger

Carburetor for Sea Doo 717 720 GS GTI GTS Sportster Challenger

This BN40I-38-24 carburetor is a direct-fit replacement that meters fuel and air for Sea Doo 717 and 720 engines, restoring smooth idle and reliable throttle response.

Overview

This carburetor is built to replace the BN40I-38-24 unit on Sea Doo 717 and 720 personal watercraft and jet boats. It handles fuel delivery so the engine runs cleanly across the rpm range. It suits riders and mechanics servicing GS, GTI, GTS, Sportster, and Challenger models.

Built For Performance

• Model BN40I-38-24 configuration for Sea Doo 717 and 720 engines
• Precision-machined throttle bore for consistent airflow
• Float and needle assembly for stable fuel level control
• Idle and mixture adjustment screws for tunable running
• Corrosion-resistant body suited to marine use
• Mounting flange matches factory intake footprint

Fits These Machines

• for Sea Doo 717 GS
• for Sea Doo 720 GTI
• for Sea Doo GTS
• for Sea Doo Sportster
• for Sea Doo Challenger

On-The-Job Use

• Replacing a worn or clogged carburetor on a 717 or 720 engine
• Restoring cold-start and idle quality on older PWC
• Seasonal tune-ups on Sportster and Challenger jet boats
• Carburetor refresh during top-end service work

Specs At A Glance

Good To Know

Q: Does this carburetor need jetting changes after install? A: Jetting depends on your altitude and existing setup, so verify against your service manual before running. Baseline settings usually get you close enough to ride.

Q: Will it fit both PWC and jet boat applications? A: It suits 717 and 720 engines across the listed Sea Doo models, but confirm your engine code and intake pattern first. Serial number differences can affect fit.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.