Sea-Doo 787 / 800 Leak Down Block Off Plates

August 17, 2024

Sea-Doo 787 / 800 Leak Down Block-Off Plates – CNC machined from 6061 aluminum, designed to test your engine for air and water leaks before installation.

Plates are 0.25" thick and backed with EVA foam for proper sealing during leak-down tests. Machined aluminum finish. The exhaust plate includes a 1/4" barb fitting for pressure testing. Comes with Allen bolts and washers. Choose carbed-only or RFI (with RAVE valve and intake plates).

Product Features


  • Durable construction: CNC machined from 6061 aluminum
  • 0.25" thick for rigidity
  • EVA foam-backed for proper sealing and repeated use
  • Exhaust plate has 1/4" barb fitting threaded for pressure testing
  • Complete kit with Allen bolts and washers
  • Optional RFI — includes RAVE valve and intake plates
  • Optional laser engraving — send your custom request

Dimensions: 8 × 8 × 8 in · Weight: 2 lbs

Need Service?

Watercraft repair and service at 865 Customz, Maryville TN.

Call 865-257-5998 Service Request