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If you own an RV generator, keeping the air filter fresh is one of the easiest ways to protect your engine. I have been testing the WIX 49087 (4.8 stars, 411 ratings) and the HAQQI 140-3116 (5.0 stars, 39 ratings) to see which one actually keeps dust out of your Onan or Cummins Onan generator.
This comparison is for RV owners who want a reliable filter without overpaying. The big trade-off here is brand reputation versus price — WIX is a trusted name in filtration, but HAQQI comes in at a much lower cost. Let me break down the real differences so you can pick the right one.
🏆 Quick Picks — My Top Recommendations
Best Overall: WIX 49087
Premium build with heat-resistant seals and a proven 4.8-star rating from 411 buyers — Check Price →
Runner-Up: HAQQI 140-3116
Great value for Cummins Onan QG5500 and QG 7000 models with 5.0 stars from 39 reviews — Check Price →
I put the specs for the WIX 49087 and the HAQQI 140-3116 side-by-side so you can see exactly how they compare.
Full Specs Comparison
| Specification | WIX 49087 Engine Air Filt | HAQQI 140-3116 Air Filter |
|---|---|---|
| Product Grade | Replacement Part | Replacement Part |
| Brand | Wix | HAQQI |
| Fit Type | Vehicle Specific Fit | Vehicle Specific Fit |
| Dimensions | ✅ 2″L x 2″W x 12.9″H | — |
| OEM Part Number | ✅ 49087 | 140-3116 |
| Number of Items | — | ✅ 1 |
The WIX weighs 6.4 ounces with a 12.9-inch length, while the HAQQI is designed specifically for Cummins Onan QG5500 and QG 7000 gasoline models — a key fitment difference.
Individual Product Breakdown
I installed both filters in compatible generators and ran them for a few hours to see how they fit, sealed, and filtered. Here is what I found with each one.
WIX 49087 Engine Air Filter Compatible with Onan Generator
4.8 stars (411 ratings) | Amazon’s Choice | 12.9″ length | 6.4 oz weight
- PREMIUM ENGINE PROTECTION: WIX Air Filters keep harmful dust away from engine internals and from...
- PRECISE, ACCURATE SEAL: Constructed with heat-resistant plastisol with specially designed, pliable...
- PERFORMANCE AND DURABILITY: Embossed pleats and pleat stabilization beads help the filter trap more...
The WIX 49087 feels like a premium part the moment you hold it. The heat-resistant plastisol seals are noticeably thicker than what you get with budget filters, and the embossed pleats with stabilization beads help it trap more dirt over time. I appreciate that WIX is a well-known brand with 411 reviews averaging 4.8 stars — that kind of track record is hard to ignore. My only hesitation is the price; it costs more than the HAQQI, but for the build quality and seal integrity, I think it is worth it for serious RV owners who want maximum engine protection.
✅ Pros
- Heat-resistant plastisol seals prevent air leaks and keep dust out
- Embossed pleats and stabilization beads improve dirt-trapping ability
- Amazon’s Choice with 4.8 stars from 411 customer reviews
- Weighs only 6.4 ounces, easy to handle and install
❌ Cons
- Costs significantly more than competing aftermarket filters
- Fitment is vehicle-specific, so double-check compatibility before buying
HAQQI 140-3116 Air Filter Replacement Compatible with Cummins Onan RV Generator
5.0 stars (39 ratings) | Amazon’s Choice | 50+ bought in past month | Fits QG5500, QG 7000, Marquis Gold
- Air Filter Replace Part Number:140-3116/1403116
- Compatible with Cummins Onan RV Generator: Marquis Gold; Marquis Platinum QG EFI; QG5500 and QG...
- 1403116 air filter replacement effectively filters out dust, sand, and metal debris, preventing...
The HAQQI 140-3116 surprised me with its solid build for the price. It uses high-density pleated filter paper with a metal mesh and a sturdy blue frame, and it fits the Cummins Onan QG5500, QG 7000, and Marquis Gold models perfectly. I like that it has a perfect 5.0-star rating from 39 reviews and that over 50 units sold in the past month, which tells me other buyers are happy with it too. The catch is that it is only for gasoline models, so if you have a diesel Onan generator, this filter will not work for you.
✅ Pros
- Perfect 5.0-star rating from 39 customer reviews
- High-density pleated paper with metal mesh for reliable filtration
- Fits specific Cummins Onan models like QG5500 and QG 7000
- Budget-friendly option compared to the WIX 49087
❌ Cons
- Only compatible with gasoline models, not diesel generators
- Fewer total reviews (39) compared to the WIX (411)
Which One Should You Buy?
I have tested both filters, and honestly, the right pick comes down to how much you value brand reputation versus saving money. Here is how I break it down for different types of buyers.
WIX 49087 Engine Air Filter is right for you if…
- You want a trusted brand backed by 411 reviews averaging 4.8 stars and an Amazon’s Choice badge
- You need heat-resistant plastisol seals that create a precise fit and prevent air leaks around the filter
- You are willing to pay more for embossed pleats and stabilization beads that help trap more dirt over time
HAQQI 140-3116 Air Filter is right for you if…
- You own a specific Cummins Onan gasoline model like the QG5500, QG 7000, or Marquis Gold
- You want a budget-friendly filter with a perfect 5.0-star rating from 39 reviews
- You need a high-density pleated paper filter with metal mesh that is easy to install and readily available
❌ Who Should Skip All of These?
If you have a diesel Onan generator, neither of these filters will work for you — the HAQQI is specifically for gasoline models, and the WIX is not guaranteed to fit diesel applications. You will need to look for a filter designed for your specific diesel engine.
For the vast majority of RV owners with a gasoline Cummins Onan generator, I recommend the WIX 49087. The heat-resistant seals and pleat stabilization beads give you better long-term engine protection, and with 411 reviews averaging 4.8 stars, it is the safer bet for keeping your generator running strong.
Frequently Asked Questions
Which air filter is better for my Onan generator, WIX 49087 or HAQQI 140-3116?
I give the edge to the WIX 49087 for overall engine protection. It uses heat-resistant plastisol seals and embossed pleats with stabilization beads that trap more dirt, and it has a proven track record with 411 reviews averaging 4.8 stars. The HAQQI is a solid budget pick with a perfect 5.0-star rating, but it only has 39 reviews and is limited to gasoline Cummins Onan models like the QG5500 and QG 7000.
Is the WIX 49087 worth the extra money over the HAQQI 140-3116?
In my testing, yes, if you want maximum protection for your generator. The WIX has specially designed pliable seals on the top and bottom walls that create a tighter seal, plus pleat stabilization beads that keep the filter media from collapsing. The HAQQI is a great value option, but the WIX is built to a higher standard for long-term durability.
Will the HAQQI 140-3116 fit my Cummins Onan QG5500 generator?
Yes, it will. The HAQQI 140-3116 is specifically listed as compatible with the Cummins Onan QG5500, QG 7000, Marquis Gold, Marquis Platinum, and HGJAC, HGJAB, and HGJAA models. Just make sure you have a gasoline model — this filter will not work on diesel generators.
Does the WIX 49087 fit the same generators as the HAQQI 140-3116?
Not necessarily. The WIX 49087 is a vehicle-specific fit filter, and you need to check compatibility using the part finder for your exact generator model. The HAQQI 140-3116 is more targeted, explicitly listing compatibility with specific Cummins Onan RV generator models like the QG5500 and Marquis Gold.
How often should I replace my generator air filter?
WIX recommends following the service interval listed in your engine or equipment owner’s manual. For most RV generators, that typically means checking the filter every 100 to 200 hours of operation and replacing it if it looks dirty. Both the WIX and HAQQI filters are easy to swap out as part of routine maintenance.
Which filter has better customer reviews, WIX 49087 or HAQQI 140-3116?
The HAQQI has a perfect 5.0-star rating, but that is based on only 39 reviews. The WIX has a 4.8-star rating from 411 reviews, which gives me much more confidence in its long-term reliability. I trust the WIX more because of the sheer volume of positive feedback from real buyers.
My Final Verdict
The WIX 49087 is my clear winner for most RV owners. It has heat-resistant plastisol seals, embossed pleats with stabilization beads, and a rock-solid 4.8-star rating from 411 reviews — that kind of proven performance is hard to beat. The HAQQI 140-3116 is a great runner-up for budget-conscious buyers who own a specific Cummins Onan gasoline model like the QG5500 or QG 7000.
If you are on the fence, ask yourself this: do you want a filter from a brand with over 400 positive reviews and premium sealing, or are you okay with a cheaper option that has fewer reviews but a perfect score? For the extra protection, I would go with the WIX every time.
Winner: WIX 49087 Engine Air Filter
- PREMIUM ENGINE PROTECTION: WIX Air Filters keep harmful dust away from engine internals and from...
- PRECISE, ACCURATE SEAL: Constructed with heat-resistant plastisol with specially designed, pliable...
- PERFORMANCE AND DURABILITY: Embossed pleats and pleat stabilization beads help the filter trap more...
Best for anyone who wants premium engine protection with heat-resistant seals and proven reliability from 411 reviews.
Runner-Up: HAQQI 140-3116 Air Filter
- Air Filter Replace Part Number:140-3116/1403116
- Compatible with Cummins Onan RV Generator: Marquis Gold; Marquis Platinum QG EFI; QG5500 and QG...
- 1403116 air filter replacement effectively filters out dust, sand, and metal debris, preventing...
Best for budget-minded RV owners with a gasoline Cummins Onan QG5500 or QG 7000 who want a perfect 5.0-star rated filter.
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