2018 Ram 3500 transmission — AT, 4x4, Chassis Cab, gasoline, AS66RC (Aisin Seiki manufactured) price snapshot
- Low
- $1,450
- Average
- $3,460
- High
- $6,880
Year & trim-specific price guide
Used 2018 Ram 3500 Transmission — AT, 4x4, Chassis Cab, gasoline, AS66RC (Aisin Seiki manufactured) prices
Trim-specific pricing for the AT, 4x4, Chassis Cab, gasoline, AS66RC (Aisin Seiki manufactured) variant of the 2018 Ram 3500 transmission, built from 26 real salvage yard listings with condition grade detail.
SKWritten bySaurabh Kumar · Co-Founder & CTO
SK
Saurabh Kumar
Co-Founder & CTO, Part Price Guide
Built the pricing pipeline that collects and normalizes used OEM part listings from salvage yards and online marketplaces across the US.
ASReviewed byAmbika Sharma · Co-Founder & COO
Last updatedOct 10, 2026AS
Ambika Sharma
Co-Founder & COO, Part Price Guide
12 years of project management and technical operations experience. Reviews price guides for sample size, fitment accuracy, and data freshness.
Price summary
A used 2018 Ram 3500 transmission (AT, 4x4, Chassis Cab, gasoline, AS66RC (Aisin Seiki manufactured)) costs $1,450 to $6,880, with a median asking price of $3,180. Based on 26 priced salvage yard listings across the US, updated Oct 10, 2026. Prices exclude shipping, core charges, and installation.
Grade A (excellent)$3,000
Grade B (good)$3,399
USD
Condition comparison
Price by part grade
Grade AClean / low wear$1,450–$3,50010 listings
Grade BStandard used$2,800–$3,8039 listings
Grade XUngraded$2,900–$6,8807 listings
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $1,450–$3,500 | 10 | |
| Grade BStandard used | $2,800–$3,803 | 9 | |
| Grade XUngraded | $2,900–$6,880 | 7 |
Median by grade
Grade price comparison
Grade A$3,000
Grade B$3,399
Ungraded$3,500
Median asking price by seller-reported condition grade · $1,450–$6,880 overall range
Trim-specific context
How does the AT, 4x4, Chassis Cab, gasoline, AS66RC (Aisin Seiki manufactured) compare?
This pricing covers the AT, 4x4, Chassis Cab, gasoline, AS66RC (Aisin Seiki manufactured) variant of the 2018 Ram 3500 transmission, based on 26 priced listings. Its $3,180 median is 10% below the 2018 Ram 3500 transmission overall median of $3,535.
There are 13 other transmission variants available for the 2018 Ram 3500.
Pricing is not a fitment guarantee. Match the VIN, part number, engine or drivetrain, and seller-listed variant before ordering.
Same year, other trims
What other 2018 Ram 3500 transmission variants are available?
AT, 4x4, Chassis Cab, gasoline, 66RFE (Chrysler manufactured)
41 listings$3,570$1,500 – $5,307AT, 4x4, Pickup, gasoline
41 listings$3,570$1,500 – $5,307MT, 4x4, (6.7L)
37 listings$5,845$3,000 – $7,928AT, 4x2, Chassis Cab, gasoline, 66RFE (Chrysler manufactured)
36 listings$2,935$1,200 – $5,100AT, 4x2, Pickup, gasoline
36 listings$2,935$1,200 – $5,100AT, 4x4, Chassis Cab, diesel (6.7L, AS69RC, Aisin Seiki manufactured)
36 listings$3,815$1,550 – $7,076AT, 4x2, Pickup, diesel (6.7L), 68RFE (Chrysler manufactured)
31 listings$3,170$2,150 – $5,145AT, 4x4, Pickup, diesel (6.7L), 68RFE (Chrysler manufactured)
30 listings$3,845$2,000 – $5,193AT, 4x2, Chassis Cab, diesel (6.7L, AS69RC, Aisin Seiki manufactured)
29 listings$3,508$2,500 – $6,820AT, 4x2, Pickup, diesel (6.7L), AS69RC (Aisin Seiki manufactured)
29 listings$3,508$2,500 – $6,820MT, 4x2, (6.7L)
27 listings$4,175$2,200 – $5,425AT, 4x2, Chassis Cab, gasoline, AS66RC (Aisin Seiki manufactured), w/o PTO
12 listings$3,200$830 – $6,880AT, 4x2, Chassis Cab, gasoline, AS66RC (Aisin Seiki manufactured), PTO (left side)
6 listings$6,880$5,500 – $10,945Back to full guide
2018 Ram 3500 transmission — all trims
Common questions
2018 Ram 3500 transmission (AT, 4x4, Chassis Cab, gasoline, AS66RC (Aisin Seiki manufactured)) FAQ
How much is a used 2018 Ram 3500 transmission (AT, 4x4, Chassis Cab, gasoline, AS66RC (Aisin Seiki manufactured))?
Based on 26 priced salvage-yard listings, a used 2018 Ram 3500 transmission in the AT, 4x4, Chassis Cab, gasoline, AS66RC (Aisin Seiki manufactured) variant lists between $1,450 and $6,880, with a median asking price of $3,180.
Which years use the AT, 4x4, Chassis Cab, gasoline, AS66RC (Aisin Seiki manufactured) transmission?
In our current dataset, the AT, 4x4, Chassis Cab, gasoline, AS66RC (Aisin Seiki manufactured) variant appears only for the 2018 model year.