Engines are the single most searched-for thing on this site. People type "103 engine", "twin cam 88", "evo motor", "107", and "103 motor and trans" into our search box more than any other part. So this is the page we wish existed when those searches come in: how to tell which engine family you are looking at, what we look at before an engine goes up for sale, and what a used Harley engine actually costs in our yard this month.
As of September 13, 2026 we have 105 complete engines listed, pulled from bikes dismantled here at 26110 Euclid Ave. Every one of them is tied to a donor motorcycle with a recorded odometer reading, and every one carries our 60-day guarantee.
First, know which engine family your bike has
Harley Big Twins and Sportsters are different animals, and within the Big Twins there are four families you will run into on a used engine shelf. The year ranges below are the general production runs; individual models switched over at different times, so check your VIN and the numbers stamped on the case before you buy anything.
Evolution 1340 (80 cubic inch), 1984 to 1999
The last of the "Evo" Big Twins. Air-cooled, carbureted on most bikes, with fuel injection arriving on some Touring models in the mid-1990s. Touring and Dyna bikes moved on after 1998; Softails ran the Evo through 1999. We currently have 1 Evo 1340 listed, a carbureted 80-inch out of a 1990 Electra Glide Sport with 37,000 miles.
Twin Cam 88 (1450cc), 1999 to 2006
Touring and Dyna got the Twin Cam 88 in 1999. Softails got the counterbalanced version, the Twin Cam 88B, from 2000. That "B" matters: the balanced Softail engine has different cases and mounts and is not a drop-in for a rubber-mounted Touring or Dyna frame, or the other way round. We have 27 Twin Cam 88s listed right now, the second-largest group on the shelf.
Twin Cam 96 (1584cc), 2007 to about 2011
Bigger bore, fuel injection across the board, and it arrived with the 6-speed Cruise Drive transmission. This is the most common engine in our yard, 41 listed, because 2007 to 2013 Touring bikes are the biggest single group of donors we take in.
Twin Cam 103 (1690cc), roughly 2010 to 2017
Showed up on Touring models first and was standard across most of the Big Twin line within a couple of years; Dyna and Softail ran it through 2017. One thing to know: the Twin-Cooled 103 fitted to 2014 and later Ultra Limited and Tri Glide models has liquid-cooled cylinder heads and needs the radiators and lower-fairing plumbing that came with it. It is not interchangeable with the air-cooled 103 without that hardware. We have 11 Twin Cam 103s listed today.
Twin Cam 110 (1800cc), 2007 to 2017
The CVO engine, plus a few late "S" Softails. We do not have one on the shelf as of this writing, but we do have a Screamin' Eagle Twin Cam 95 (1550cc) out of a 2002 CVO Road King, which is an earlier factory big-bore.
Milwaukee-Eight 107 and 114, 2017 onward
Four valves per cylinder, single cam, and the whole Touring line switched over in 2017 with Softail following in 2018. The 107 (1746cc) is the base engine; the 114 (1868cc) came on Specials and CVOs, and larger 117s followed. We have 7 Milwaukee-Eight 107s listed and no 114s at the moment.
Sportster 883 and 1200
Sportsters are unit construction: the engine and transmission share one set of cases and cannot be separated. That is why our Sportster engine listings say "Engine Motor Transmission" in the title, and why all 18 Sportster engines we have listed (15 883s and 3 1200s) include the gearbox. Note the split between carbureted (2006 and earlier) and fuel-injected (2007 and later) Sportsters when you are matching one to your bike.
Reading the engine itself
Three places to look before you get excited about a price:
- The case stamping. Harley stamps an abbreviated VIN into the crankcase. On the original bike it matches the frame VIN. A stamped number that does not match the donor bike, or has been ground off, is a walk-away. Some states also want a replacement engine documented at registration, so keep the donor bike's details, which we list with every engine.
- Carb or EFI, cable or ride-by-wire. Of our 105 engines, 93 are fuel-injected and 11 are carbureted. Beyond that, 2008 and later Touring bikes use electronic throttle control (no throttle cable), so an engine from one of those needs the matching throttle body, ECM and harness to run in an earlier bike, and the reverse is just as true.
- A or B cases on Twin Cams. Balanced Softail engines carry a "B" in the engine designation (88B, 96B, 103B). A Softail engine into a Touring frame, or vice versa, is a project, not a swap.
What to check on a used Twin Cam before you buy
These are the things we look at when an engine comes off a donor bike, and they are the questions you should ask any seller.
- Mileage, from the donor bike, not from a guess. Every engine we list is linked to a bike we dismantled, with the odometer recorded at intake. 55 of the 105 engines currently listed carry the mileage right in the title. They range from about 2,000 miles to 69,000, with the median sitting around 26,000.
- Cam chain tensioners on 1999 to 2006 Twin Cams. The early spring-loaded tensioner shoes are a known wear item. Ask whether the shoes have been inspected or replaced, or whether the engine has been converted to hydraulic tensioners or a gear drive. 2007 and later engines got hydraulic tensioners from the factory.
- Does it turn over, and what is in the oil? An engine that spins freely by hand with no grinding, and oil with no glitter in it, tells you most of what a tear-down would. Metal in the cam chest is the thing you are trying not to find.
- Leaks and seepage. Rocker box gaskets and base gaskets are the usual suspects. Weeping is normal on a bike with miles; a wet case half is not.
- What is actually included. Our photos show exactly what ships, and we shoot a lot of them: the median engine listing has 24 photos and some have over 50. If the throttle body, starter, or cam plate is not in the pictures, it is not in the box. Ask before you assume.
What a used Harley engine costs in our yard right now
Prices from our live listings on September 13, 2026. These move as engines sell and new donors come in, so treat them as a snapshot rather than a quote.
| Engine | Listed today | Price range | Typical (median) |
|---|---|---|---|
| Twin Cam 96 | 41 | $810 to $1,710 | $1,390 |
| Twin Cam 88 | 27 | $1,120 to $2,025 | $1,440 |
| Sportster 883 (with transmission) | 15 | $1,169 to $1,517 | $1,332 |
| Twin Cam 103 | 11 | $1,485 to $2,340 | $2,025 |
| Milwaukee-Eight 107 | 7 | $1,935 to $3,465 | $2,250 |
| Sportster 1200 (with transmission) | 3 | $1,251 to $1,575 | $1,349 |
| Evolution 1340 | 1 | $1,665 | $1,665 |
Two patterns worth knowing. Twin Cam 96s are the cheapest per engine because we have the most of them, not because they are worse. And a low-mileage Twin Cam 88 can cost more than a high-mileage 103; mileage moves price more than displacement does inside the Twin Cam range.
"103 motor and trans": the Big Twin transmission question
On every Big Twin, the transmission is a separate unit bolted behind the engine, so an engine listing does not include one. We keep them separately: 115 transmissions listed today, 67 five-speeds and 48 six-speeds, with a median price around $629. If you are replacing both, tell us the donor bike you want them from and we will pull a matched pair where we have one.
The 6-speed Cruise Drive arrived with the Twin Cam 96 in 2007 on Touring and Softail (Dyna got it in 2006). Five-speeds are what you want for 2006-and-earlier Touring and Softail, and for 2005-and-earlier Dynas.
Pickup and shipping
Engines can be picked up at the yard, 26110 Euclid Ave, Euclid, OH 44132, Monday to Friday 9 to 5. Shipped engines go by freight: our free shipping on orders over $70 does not cover oversized items, freight orders are processed within a day of payment, and delivery inside the continental US usually takes 4 to 7 days. Details are on our shipping page. If you want a quote before you buy, call +1 440-817-0268 with the listing's stock number and your ZIP code.
Browse every engine and engine part we have listed, or see the bikes currently being dismantled if you want to know what is about to come off the line.
Written by the Exclusive Harley Parts team, Euclid, Ohio. Stock counts and prices are taken from our live inventory on September 13, 2026 and change daily. This article was drafted with AI assistance from our own catalog data and reviewed by our staff before publishing.