Johnson Indmar Water Pump Impeller Service Kit - 812B

Rated 4.4 out of 5
Based on 8 reviews
Write a Review
Johnson Indmar Water Pump Impeller Service Kit - 812B
Sale price
Regular price
MORE ON THE WAY - Expected Soon

Order today to reserve yours obligation free, or sign up to get a notification when it's available.

Item: 10090

OEM replacement impeller and service kit for water pump on Indmar marine engines.

This is the OEM impeller used in the water pump on nearly every Indmar inboard marine motor.


Indmar Marine Engines:

  • All Indmar Ford Raptor 6.2L Engines including: Raptor 400, Raptor 410, Raptor 450 and Raptor 575
  • All Indmar Monsoon Models including: Monsoon 450HP, Monsoon 320HP, Monsoon 325HP, Monsoon 330HP, Monsoon 335HP, Monsoon 340HP & Monsoon 350HP
  • All Indmar Hammerhead Models. Callaway 365, 380HP & 383-400HP
  • All Indmar Carbureted, LCR, & 8.1L Engines
  • All Indmar 5.7, 6.0 LS2 and 6.2 liter GM blocks

Marine Power Engines:

  • All Vortec block Marine Power Engines (common on Tige models).

Note: This impeller is the correct application for both fresh-water and closed-cooling applications for the engines listed above.

No Warranty
Manufacturer Part Number
average rating 4.4 out of 5
Based on 8 reviews
  • 5 Stars
    6 Reviews
  • 4 Stars
    1 Review
  • 3 Stars
    0 Reviews
  • 2 Stars
    0 Reviews
  • 1 Star
    1 Review
88% of reviewers would recommend this product to a friend
Customer photos and videos
8 Reviews
Reviewed by Mark J H.
Verified Buyer
I don't recommend this product
Rated 1 out of 5
Review posted

Never shipped

Ordered in March 2024. It's now April 2024, one month of back order is too long for a simple part like this. Wake Boat season is now here and no word yet.

Please do better Wakemakers. Been a customer for years and other online shops have this in stock.

Disappointed in Knoxville TN

Was this helpful?
Reviewed by brand c.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

indmar impeller

perfect fit!!

Was this helpful?
Reviewed by Nicholas C.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Work as designed

Everything I needed in the kit

Was this helpful?
Reviewed by bobby s.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Great impeller

Best impeller for the 6.2 raptor motors.

Was this helpful?


Good to know you have a fresh impeller in for the season!

Reviewed by Jared H.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted


Worked on my Indmar Raptor 400, easy to install!

Was this helpful?


This product can expose you to chemicals including DINP (Diisononyl phthalate) and DIDP (Diisodecyl phthalate) which are known to the State of California to cause cancer. For more information go to

Best Price Promise

We want you to receive the best possible deal on your boating products. We match any authorized dealer's advertised price for the same in-stock item. What does that mean for you? If you find the same product in stock at another authorized retailer we'll gladly match their price delivered price. Don't forget that on top of our free fast shipping (on any order over $99 shipped to the Continental US) we also offer our exclusive lifetime technical support.

  • WakeMAKERS Best Price Promise is only valid on products sold by factory authorized internet dealers.
  • WakeMAKERS Best Price Promise is not available with any coupons or individual discounts.
  • WakeMAKERS Best Price Promise is based on the delivered price for the item and will factor in shipping and tax charges.
  • WakeMAKERS Best Price Promise is only available on an exact, in stock product with a displayed internet price (not price implied after promotions and coupons)
  • WakeMAKERS Best Price Promise is not available to be applied retroactively, so please contact us us BEFORE placing your order.

If you have any questions about our price match policy, or if you would like us to match a price for you, simply contact us.

Note We have the right to refuse price matching at any time for any reason. In order to qualify for price matching, the item must be identical make, model, year, and part number, and must be in stock. Price matching excludes sale items and previously purchased products.

365 Day Returns

365 Day Returns Your satisfaction is our biggest priority, which is why we gladly accept returns on any new product for up to 365 days from the date your order ships. Refunds will be issued to the original payment method for up to 30 days from the original ship date. Returns on orders older than 30 days up to 365 days will be processed as store credit that can be applied to a future order.

For the full details of our 365 Return Policy, including any restrictions or exclusions, please visit the Returns & Exchanges section on Customer Service page.

Expert Advice

Our product experts bring over 40+ years of real-world experience and knowledge of the boating industry. They really know the gear, because they spend their free time out on the water with friends and family testing the products out.

Product Expert Phone Hours 9am - 5pm (PST) Monday - Friday

Product Expert Email We respond to most emails within 24-48 hours.

Looking for specific installation guides or instructional videos? Check out our Resource Section for detailed information.

WakeMAKERS Online Shopping Tools Our Finder tools are designed to help you pick the perfect product. We've simplified the complex process of finding the right ballast or prop for you boating style and made it easy by doing the research for you.

Our goal is simple; provide the best product, at the best price, with the best customer support.

Free Shipping On Orders Over $99

The last thing you want to do is pay to have your order shipped when shopping online, which is why we include free shipping on all orders over $99*.

*Free shipping offer applies to orders over $99 shipped within the Continental United States and cannot be combined with other discounts or promotions (including coupon codes).