Pay in installments of $43.00 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 30 - Aug 4
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
R & D Engine Mount w/4" Footprint - 3/4" Stud - 250-563lbs Capacity Per MountEngine Mount w 4" Footprint 3 4" Stud 250 563lbs Capacity Per Mount The R & D Marine Engine Mounts are designed specifically for the rigors of marine applications. The mounts are stiff enough to absorb forward and reverse propeller thrust, yet soft enough to isolate drivetrain vibrations from the hull. To help increase the longevity of the mounts, all steel parts are zinc plated and pasivated to limit corrosion. The rubber component is covered by an
Engine Mount w/4" Footprint - 3/4" Stud - 250-563lbs Capacity Per MountThe R & D Marine Engine Mounts are designed specifically for the rigors of marine applications. The mounts are stiff enough to absorb forward and reverse propeller thrust, yet soft enough to isolate drivetrain vibrations from the hull.
To help increase the longevity of the mounts, all steel parts are zinc plated and pasivated to limit corrosion. The rubber component is covered by an oil shield to protect it from petroleum based products.
R & D Marine mounts are preloaded based on the combined engine and transmission weight to limit engine movement. To facilitate in the ease of installation the mounts are height adjusting and the mounting holes in the base of the mount are slotted to assist in alignment of the drivetrain.
How To Select (details required):
1.Define the total weight of the engine and the transmission.
2.Determine 60% of the total weight and then divide by 2 to determine the capacity of each of the rear mounts (the mounts on the tranmission side of the engine).
3.Determine 40% of the total weight and then divide by 2 to determine the capacity of each of the front mounts (the mounts opposite the tranmission side of the engine).
4.Determine the stud necessary stud diameter and footprint of the mount.
5.Choose mount most appropriately sized for the per mount weight. When possible, choose the mount nearest the middle of the weight range.
Example:
Engine weight is 480lbs., transmission weight is 110lbs., footprint is 4", stud diameter is 5/8".
Total weight is 590lbs.
590 x .6 / 2 = 177 lbs per rear mount. Mounts required are 800-010
590 x .4 / 2 = 118 lbs per rear mount. Mounts required are 800-037
Why R&D Marine Engine Mounts?
- Designed for marine use, accepts propeller and engine thrust in both directions
- Offers a fail safe design
- R & D Marine Mounts are height adjustable
- Pre-loaded to reduce movement
- Slotted holes in base to assist in alignment
- Mount types to fit all applications
Manufacturer : R & D Marine
Manufacturer Part No : 800-030
UPC : 839662003605
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.1 ★★★★★
Based on 20 reviews
Sort
Product Reviews
★★★★★ 5
Best dumbbells money can buy
Great dumbbells. I purchased these for home work out and recovering from a neck injury. My physical therapist said it will take a while, as suspected. And I'm so glad I found these. They have great quality. Easy to hold nice texture for gripping which is so important and easy to clean as well. Love the pack of three so I can build up to it in my own time. Love the storage capabilities. Stand is a Little cheap plastic holder. But the weights themselves are great. No cutting corners very good quality. I have had these for a year now. Use them 3x a week for multiple physical therapy needs. And I highly recommend and I have finally used all three instead of just the lightest of the two. The color has never faded. Colors are beautiful I might add. They even sit near my window so no sun faded damage either. Thats some quality right there. They have never stained from sweating. There have never been damage from anything I've done. Neoprene coating excellent quality. So happy and joyful that I made this buy. So just starting a healthy exercise journey or need recovery physical therapy needs. Highly recommend because eventually you'll get stronger and now you will have a whole complete quality set that will last you for years. For a better bargain I might add. Instead of buying individual cheap dumbbells. Invest in these great dumbbells, you won't regret it. I can't say enough good things.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 5, 2025
★★★★★ 5
Good weights
The weights seem to be good quality for the price, the coating has lasted and is easy to grip. I like the variety of weights for my purpose. The only slightly negative comment I have is on the holder. It's nice to have one, but geez, this one is so thin when you screw it together it could blow over in a strong wind. It's surdy enough to hold the weights, but it's certainly not an outstanding piece of engineering. Just be sure to place it where it won't do damage when it falls down. And take care when you remove and replace the weights on it!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 4, 2025
★★★★★ 5
Perfect gift
Bought these weights for my dad and they are easy to set up. They weigh within an ounce as they are labeled. The rubber is very good quality and work perfectly for my dads strength training after surgery.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 2, 2026
★★★★★ 5
Great product
Great product
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 15, 2026
★★★★★ 4
Weights are great, the stand is cheap but good
I bought this for our little home gym. The weights are accurate and comfortable to use. I did read reviews that said the plastic stand came broken for a lot of customers. I did not personally have this issue so maybe they upgraded their packaging. I can say it is a little flimsy but it works for me just fine and I don't plan on returning.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 1, 2026