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Ships within 48 hours · Estimated delivery Aug 4 - Aug 9
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Comp Cams Xtreme Marine,XM298H Jet Boat w/ A or B Impeller,High Performance UseXtreme Marine", XM298H Jet Boat w A or B Impeller, High Performance Use Hydraulic: Good for jet boat with A or B impeller. Good in Bracket racing and high performance use. Specifications Lifter Type: Hydraulic Lifter Engine Family: Ford 429, 460 c. i. 8 CYL. 1968 1994 Cam Family: Xtreme Marine" Hydraulic Flat Tappet Camshafts RPM Range: 2200 to 6500 Valve Timing: 0. 006 Lobe Separation: 112 Intake Centerline: 110 Valve Lash: Hyd.(Intake) Hyd.(Exhaust)
Xtreme Marine", XM298H Jet Boat w/ A or B Impeller, High Performance Use
Hydraulic: Good for jet boat with A or B impeller. Good in Bracket racing and high performance use.
Specifications
Lifter Type: Hydraulic Lifter
Engine Family: Ford 429, 460 c.i. 8 CYL. 1968-1994
Cam Family: Xtreme Marine" Hydraulic Flat Tappet Camshafts
RPM Range: 2200 to 6500
Valve Timing: 0.006
Lobe Separation: 112°
Intake Centerline: 110°
Valve Lash: Hyd.(Intake)/Hyd.(Exhaust)
Duration: 298(Intake)/ 316(Exhaust)
Duration @ .050" Lift: 254(Intake)/ 264(Exhaust)
Valve Lift: 0.585(Intake)/ 0.588(Exhaust)
Lobe Lift: 0.338(Intake)/ 0.34(Exhaust)
Vehicle Fitments:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1969 - 1974 | Ford | Country Sedan | Base |
| 1969 - 1974 | Ford | Country Squire | Base |
| 1969 - 1972 | Ford | Custom | Base |
| 1969 - 1976 | Ford | Custom 500 | Base |
| 1975 - 1976 | Ford | Custom 500 | Ranch Wagon |
| 1975 - 1976 | Ford | Elite | Base |
| 1975 - 1979 | Ford | F-100 | Custom, Base, Ranger XLT, Ranger |
| 1975 - 1977 | Ford | F-100 | Northland |
| 1979 | Ford | F-100 | Ranger Lariat |
| 1977 | Ford | F-100 | XLT |
| 1976 - 1978 | Ford | F-150 | Base |
| 1975 - 1978 | Ford | F-150 | Northland |
| 1978 - 1979 | Ford | F-150 | Ranger Lariat |
| 1975 - 1979 | Ford | F-150 | Ranger, Custom, Ranger XLT |
| 1977 | Ford | F-150 | XLT |
| 1976 - 1986 | Ford | F-250 | Base |
| 1975 - 1978 | Ford | F-250 | Northland |
| 1978 - 1979 | Ford | F-250 | Ranger Lariat |
| 1975 - 1979 | Ford | F-250 | Ranger XLT |
| 1975 - 1994 | Ford | F-250 | Ranger, Custom |
| 1983 - 1994 | Ford | F-250 | XL |
| 1983 | Ford | F-250 | XLS |
| 1977 - 1994 | Ford | F-250 | XLT |
| 1985 - 1992 | Ford | F-250 | XLT Lariat |
| 1975 - 1994 | Ford | F-350 | Base |
| 1975 - 1992 | Ford | F-350 | Custom |
| 1975 - 1978 | Ford | F-350 | Northland |
| 1978 - 1979 | Ford | F-350 | Ranger Lariat |
| 1975 - 1979 | Ford | F-350 | Ranger XLT, Ranger |
| 1983 - 1994 | Ford | F-350 | XL |
| 1983 | Ford | F-350 | XLS |
| 1977 - 1994 | Ford | F-350 | XLT |
| 1985 - 1992 | Ford | F-350 | XLT Lariat |
| 1970 | Ford | Fairlane | 500 |
| 1969 - 1974 | Ford | Galaxie 500 | Base |
| 1969 - 1970 | Ford | Galaxie 500 | XL |
| 1973 - 1976 | Ford | Gran Torino | Brougham |
| 1974 - 1975 | Ford | Gran Torino | Elite |
| 1972 - 1975 | Ford | Gran Torino | Sport |
| 1972 - 1976 | Ford | Gran Torino | Squire, Base |
| 1969 - 1978 | Ford | LTD | Base |
| 1970 - 1976 | Ford | LTD | Brougham |
| 1975 - 1978 | Ford | LTD | Landau, Country Squire |
| 1969 - 1971 | Ford | Mustang | Boss 302, Base |
| 1971 | Ford | Mustang | Boss 351 |
| 1970 - 1971 | Ford | Mustang | Mach 1, Grande |
| 1969 - 1970 | Ford | Mustang | Shelby GT-350, Boss 429, Shelby GT-500 |
| 1969 - 1974 | Ford | Ranch Wagon | Base |
| 1970 | Ford | Ranch Wagon | Police Cruiser |
| 1970 - 1971 | Ford | Ranchero | Base |
| 1970 - 1977 | Ford | Ranchero | GT, Squire, 500 |
| 1968 - 1976 | Ford | Thunderbird | Base |
| 1971 | Ford | Torino | 500 |
| 1970 - 1976 | Ford | Torino | Base |
| 1970 - 1971 | Ford | Torino | Super Cobra Jet, Squire, Brougham, Cobra, GT |
| 1968 - 1978 | Lincoln | Continental | Base |
| 1968 - 1971 | Lincoln | Mark III | Base |
| 1972 - 1976 | Lincoln | Mark IV | Base |
| 1977 - 1978 | Lincoln | Mark V | Base |
| 1969 - 1974 | Mercury | Colony Park | Base |
| 1970 - 1974 | Mercury | Cougar | Base |
| 1970 | Mercury | Cougar | Boss 429 |
| 1970 - 1971 | Mercury | Cougar | Cobra Jet, Boss 302 |
| 1970 - 1976 | Mercury | Cougar | XR-7 |
| 1970 - 1971 | Mercury | Cyclone | Base, GT, Spoiler |
| 1975 - 1978 | Mercury | Grand Marquis | Base |
| 1969 - 1970 | Mercury | Marauder | X-100, Base |
| 1969 - 1978 | Mercury | Marquis | Brougham, Base |
| 1975 - 1976 | Mercury | Marquis | Colony Park |
| 1970 - 1976 | Mercury | Montego | Base, MX, MX Brougham |
| 1975 | Mercury | Montego | Brougham |
| 1972 - 1973 | Mercury | Montego | GT |
| 1976 | Mercury | Montego | MX Villager |
| 1970 - 1975 | Mercury | Montego | Villager |
| 1969 - 1974 | Mercury | Monterey | Custom, Base |
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
4.5 ★★★★★
Based on 30 reviews
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Product Reviews
★★★★★ 5
nice chair for the money
This is a great chair for those not wanting to spend a lot of money and well built and sturdy. I don't do gaming so I'm looking at it as a computer chair so that's what my review will focus on. I had no trouble putting it together as it has a nice instruction book and not a one page print out like most China made products. Also the enclosed Allan wrench with a handle was someone's smart idea. It looks good (I also bought it since it was red) it's comfortable and fit's my needs but I can't comment on the durability factor as I have it for just a few days but I have no complaints for the price I paid at this time.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 19, 2024
★★★★★ 5
I Recommend!
very comfortable chair ive had it for a while now, it starts to get a faint creaking noise, but nothing unbearable. the cushions are firm yet comfortable at the same time. its not too big of a chair, fits great in my room. for the price , its pretty good quality, same could be said for its reclining, depending on how you set the tension of the reclining, the chair can be reclined with ease, or tight. this chair was easy to use and to set up. I very much recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 13, 2025
★★★★★ 5
Great chair at a great price point.
This item was easy to put together, it was comfortable and visually stunning to look at. My toddlers are able to climb in and out as the chair remains stable. It’s simple to recline, and does so smoothly. The quality is great especially for the price point
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 7, 2025
★★★★★ 4
I would by again!
Good and lasted for over a year. A good quality product.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 11, 2026
★★★★★ 5
I'll Take Three!
I recently purchased the DUMOS Ergonomic Computer Gaming Chair, and I couldn't be happier with my decision! This chair combines comfort, style, and affordability in a way that truly exceeded my expectations. The PU leather lumbar support provides excellent comfort and proper posture, making long gaming or work sessions much more enjoyable.
What really surprised me was the fantastic price—so good that I ended up buying three! I chose two in striking red and one in sleek blue for each person's room, and they all look fantastic. The build quality feels sturdy and durable, and the ergonomic design has already made a noticeable difference in my comfort levels.
If you're looking for a stylish, comfortable, and budget-friendly gaming or office chair, I highly recommend the DUMOS Ergonomic Chair. It’s a great investment in your comfort and style!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 19, 2025
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