SKU: 52985051346

Koshi Marine Carbon Fiber Engine Air Scoops for Mercury V8 Outboard

Sale price$809.55 Regular price$899.50
Save 10%

Pay in installments of $224.88 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 17 - Aug 22

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Koshi Marine Carbon Fiber Engine Air Scoops for Mercury V8 OutboardSkillful knowledge has it that removing the cowling on your 300R 450R will increase your engine's power as more airflow becomes available. The Koshi carbon scoops act as an "air ram" that allows forced air into the cowling, increasing the static air pressure, which ultimately makes its way into the supercharger on the 450R, therefore providing more engine power. These scoops also help reduce what is commonly referred to as "station wagon effect",

 

Skillful knowledge has it that removing the cowling on your 300R/450R will increase your engine's power as more airflow becomes available. The Koshi carbon scoops act as an "air ram" that allows forced air into the cowling, increasing the static air pressure, which ultimately makes its way into the supercharger on the 450R, therefore providing more engine power. These scoops also help reduce what is commonly referred to as "station wagon effect", which is the pulling of exhaust fumes into the rear of the intake, which makes its way into the intake, reducing horsepower. This is primarily a concern on boats going over 100+ mph.

The Koshi air scoops have been designed and manufactured in-house at Koshi's state-of-the-art carbon fiber facility, utilizing blemish-free Prepeg carbon fiber.

Outboard Fitment:

  • - Mercury Verado V8 4.6L 250HP
  • - Mercury Verado V8 4.6L 300 or 300R
  • - Mercury V8 4.6L 450R
  • - Mercury V8 4.6L 500R

 

 

Finish Options:
- Koshi Carbon Scoop in High Gloss
- Prepreg Carbon Fiber material (Using Delta-Preg, the exact supplier of Ferrari and Lamborghini).
- Cured with Autoclave technology (140°C – 6 bar)
- Individual Quality Control for a guaranteed and precise fit
- Stylish and carefully designed.

The kit comes with left and right cowling pieces and each unit is for one engine.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 52985051346

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.7 ★★★★★
Based on 9 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
A
Verified Purchase
Andre S. Palomo
Whiting, US
★★★★★ 5
Great watch!
Style: Dress, Color: Gold Tone Stainless Steel
BEAUTIFUL WATCH and excellent horology you would expect from Citizen.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 10, 2026
N
Verified Purchase
Nicole Palochik
New York, US
★★★★★ 5
Great Buy
Style: Dress, Color: Two-Tone Gold/ Blue Dial, Style: Dress, Color: Two-Tone Gold/ Blue Dial
Stunning watch!! Purchased for my boyfriend for his birthday. He is a bigger guy with a larger arm/wrist so the size of this watch looks great on him. He receives a ton of compliments on it, and it still catches my eye every time he wears it. Decent weight without being too heavy (he reports). Perfect to wear as a daily watch or dress up with
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 6, 2026
P
Verified Purchase
Patrick Caputo
Battle Creek, US
★★★★★ 5
Quality and “Executive” Look
Style: Dress, Color: Two-Tone Gold/ Blue Dial
Quality you come to expect from Citizen. Looks and feels like a more expensive watch without busting your wallet. I get the most compliments on this watch over any other I own!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 18, 2025
W
Verified Purchase
Willie
Natrona Heights, US
★★★★★ 5
For the money you spend, you can't beat it.
Style: Dress, Color: Two-Tone Gold/ Blue Dial
Citizen has the best watches for the money you spend. Can't beat the prices.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
G
Verified Purchase
Goldie Gold
West Palm Beach, US
★★★★★ 5
It all good
Style: Dress, Color: Gold Tone Stainless Steel
Very nice watch love it and the price
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 6, 2026

recommand products