• Intake Manifold Spacer Kawasaki JS440-550 - K550-SPCR
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Intake Manifold Spacer JS440/550

Intake Manifold Spacer JS440/550

K550-SPCR

In stock

$55.00
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Intake Manifold Spacer for the Kawasaki JS440 and JS550 piston port motor. This spacer is what makes it possible to run a modern SBN-style Mikuni carburetor on an early piston port engine.

What it does

The SBN-series Mikuni (SBN38, SBN44, SBN46) is the go-to performance carb for 440/550 builds. It flows better than the stock carb and has a built-in fuel pump on the back of the carb body, which means no separate pulse-driven pump plumbing.

The catch: that integrated fuel pump sticks out further than the stock carb. Bolt an SBN directly to a stock 44mm piston port intake manifold and the pump won't clear. The K550-SPCR sits between the carb and the intake, moving the carb back far enough for the pump to fit. Without it, the swap doesn't physically go together.

Use this if you're

  • Upgrading from the stock carb to a Mikuni SBN
  • Running a piston port 440 or 550 with the stock 44mm intake manifold
  • Building a freestyle, freeride, or vintage race motor and want a modern carb

Fitment

  • Kawasaki JS440 piston port
  • Kawasaki JS550 piston port
  • Requires stock 44mm intake manifold

Mounting hardware sold separately: K-550-SPCR-HARDWARE

Liability Disclaimer – Closed Course Use Only

Blowsion products are intended for closed course competition use only. These products are not designed, tested, or approved for use on public waterways or pollution-controlled vehicles.

Installation and operation of Blowsion components may affect the safety, emissions compliance, and legal status of your watercraft. Use of these products on public waterways may be a violation of federal, state, or local laws.

By purchasing and installing Blowsion products, the user assumes all responsibility and risk associated with their use, including but not limited to personal injury, property damage, or legal penalties.

Always follow proper safety procedures and consult with a qualified technician for installation.

Product Installation Disclaimer:

Warning:

When using electric or battery-operated tools inside the hull, ensure the area is well-ventilated and free of fumes. Failure to follow this precaution may result in fire, explosion, serious injury, or death.

Disconnect the battery before performing any installation or maintenance to prevent accidental ignition or electrical shock.

Allow the engine to cool completely before beginning installation.

No Smoking!

This kit is not designed for use on vehicles equipped with pollution control systems. Installing this kit on such vehicles may violate state or local laws

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