Class A Diesel Pusher for Sale at MHSRV - The World's Leading RV Specialists

Diesel Pusher RV FAQs

What is a diesel pusher RV?

A diesel pusher is a Class A motorhome with the diesel engine mounted at the rear of the coach, "pushing" the chassis from behind. Most diesel pushers use Cummins diesel engines (B6.7, L9, or X15 depending on tier and length) paired with Allison automatic transmissions and built on Freightliner, Spartan, or Tiffin PowerGlide chassis platforms. The rear-engine configuration delivers a quieter cabin than a front-engine gas Class A, since the engine is behind the driver rather than under the doghouse. Diesel pushers typically come with full air ride suspension and full air brakes as standard equipment, along with an exhaust or compression engine brake for descending grades.

What's the difference between a diesel pusher and a gas Class A?

A gas Class A motorhome has the gasoline engine mounted at the front of the coach (typically a Ford 7.3L V-8 on the Ford F-53 chassis), while a diesel pusher has the diesel engine mounted at the rear. The differences extend beyond engine placement. Diesel pushers generally come with full air ride suspension and air brakes (vs. leaf-spring suspension and hydraulic brakes on most gas Class A products), higher tow ratings (commonly 10,000 pounds or more vs. 5,000 pounds typical on gas), longer engine service life, and a more refined long-distance ride. Gas Class A motorhomes offer a meaningfully more accessible price point, simpler routine maintenance, and broader service network access at Ford dealerships nationwide. Buyers prioritizing long-haul travel, mountain-grade performance, and full-time RV living typically choose diesel pushers; buyers prioritizing accessibility and shorter trip distances typically choose gas Class A.

How long does a diesel pusher engine last?

Diesel pusher engines routinely deliver 300,000 miles or more of service life with proper maintenance. The Cummins B6.7, L9, and X15 are commercial-grade diesel engines designed for long-haul truck duty cycles, so motorhome use (which typically accumulates miles slowly) puts comparatively light demands on them. Diesel pusher chassis components (Allison transmissions, Freightliner air brake systems, Spartan air suspension) are similarly engineered for long service life. The practical implication for buyers is that a well-maintained used diesel pusher can still have substantial useful life remaining at high mileage, which is meaningfully different from gas Class A products where engine and transmission service life tends to be the limiting factor on long-term ownership.

How much can a diesel pusher tow?

Most diesel pushers offer 10,000-pound trailer hitches as standard equipment, with higher-tier coaches stepping up to 15,000-pound or 20,000-pound hitches on the flagship products. This compares to the 5,000-pound hitch typical on gas Class A motorhomes. The higher tow rating, combined with the diesel pusher's higher GVWR and GCWR, makes diesel pushers well-suited for towing larger enclosed trailers, multi-vehicle setups, boats, or substantial toad vehicles behind the coach. Always confirm the specific trailer hitch rating and GCWR for the floor plan you're considering, since towing capacity varies by chassis configuration and length.

Does a diesel pusher come in a bunk model floor plan?

Bunk-equipped diesel pusher floor plans exist but are relatively rare in the segment, since the typical diesel pusher buyer is a couple or full-time traveler rather than a family. Notable bunk-equipped diesel pushers at MHSRV include the Tiffin Allegro Red 38 KA (dedicated rear passenger-side bunk beds, sleeps up to 8) and the Tiffin Byway 38 BL (dedicated rear bunks plus two full bathrooms). For broader bunk-equipped options across other RV categories, see bunk model RVs at MHSRV.

What chassis brands are used on diesel pushers?

The three major diesel pusher chassis manufacturers are Freightliner (with the XCR, XCS, and XSH platforms used across multiple brands), Spartan (with the K2, K3, and K4 platforms used primarily on Entegra and Foretravel products), and Tiffin's proprietary PowerGlide XC chassis (used on the Tiffin Phaeton and Allegro Bus). All three platforms pair Cummins diesel engines (B6.7, L9, or X15) with Allison automatic transmissions, full air brake systems, and air ride suspension. Specific chassis configurations vary meaningfully by tier — entry-tier diesel pushers typically use leaf-spring front suspension with air-ride rear, while flagship coaches use independent front suspension (IFS) with full air ride on all axles.

Where can I buy a diesel pusher RV?

Motor Home Specialist in Alvarado, Texas is the #1 volume-selling motor home dealer in the world and stocks one of the largest selections of new and used Class A diesel pusher motorhomes for sale anywhere in the country. MHSRV is a full-line dealer for most of the major diesel pusher manufacturers (Tiffin, Entegra, Foretravel, Fleetwood, Holiday Rambler, Thor, Forest River, American Coach, Sportscoach, Winnebago) and ships diesel pusher motorhomes to customers nationwide, with in-house financing, trade-ins, and full-service support after the sale.