Diesel Buyer's Guides: Cummins, Power Stroke & Duramax | Alligator Performance
"What does my truck actually need?" Our sales team answers that question all day, so we wrote the answers down. Pick your truck below to see every buyer's guide we have for it, starting with maintenance: the service schedule, the known failure points for your years, and the parts we carry that fix them.
Ram Cummins Buyer's Guides
Dodge and Ram 2500 and 3500 pickups with the Cummins inline six. Pick your years.
1994-1998 Dodge Ram 2500 / 3500 5.9L Cummins 12VBuyer's Guides ›
1998.5-2002 Dodge Ram 2500 / 3500 5.9L Cummins 24VBuyer's Guides ›
2003-2004 Dodge Ram 2500 / 3500 5.9L CumminsBuyer's Guides ›
2004.5-2007 Dodge Ram 2500 / 3500 5.9L CumminsBuyer's Guides ›2007.5-2009 Dodge Ram 2500 / 3500 6.7L CumminsBuyer's Guides ›
2010-2012 Ram 2500 / 3500 6.7L CumminsBuyer's Guides ›
2013-2018 Ram 2500 / 3500 6.7L CumminsBuyer's Guides ›
2019-2024 Ram 2500 / 3500 6.7L CumminsBuyer's Guides ›2025-2026 Ram 2500 / 3500 6.7L CumminsBuyer's Guides ›
Ford Power Stroke Buyer's Guides
Ford F-250 and F-350 pickups with every generation of the Power Stroke diesel. Pick your years.
1994-1997 Ford F-250 / F-350 7.3L Power StrokeBuyer's Guides ›
1999-2003 Ford F-250 / F-350 Super Duty 7.3L Power StrokeBuyer's Guides ›2003-2007 Ford F-250 / F-350 6.0L Power StrokeBuyer's Guides ›
2008-2010 Ford F-250 / F-350 6.4L Power StrokeBuyer's Guides ›
2011-2016 Ford F-250 / F-350 6.7L Power StrokeBuyer's Guides ›
2017-2019 Ford F-250 / F-350 6.7L Power StrokeBuyer's Guides ›
2020-2022 Ford F-250 / F-350 6.7L Power StrokeBuyer's Guides ›
2023-2024 Ford F-250 / F-350 6.7L Power StrokeBuyer's Guides ›
GM Duramax Buyer's Guides
Chevy Silverado and GMC Sierra 2500HD and 3500HD pickups with the 6.6L Duramax. Pick your years.
2001-2004 Chevy / GMC 2500HD / 3500HD 6.6L Duramax LB7Buyer's Guides ›
2004.5-2005 Chevy / GMC 2500HD / 3500HD 6.6L Duramax LLYBuyer's Guides ›
2006-2007 Chevy / GMC 2500HD / 3500HD 6.6L Duramax LBZBuyer's Guides ›
2007.5-2010 Chevy / GMC 2500HD / 3500HD 6.6L Duramax LMMBuyer's Guides ›
2011-2016 Chevy / GMC 2500HD / 3500HD 6.6L Duramax LMLBuyer's Guides ›
2017-2019 Chevy / GMC 2500HD / 3500HD 6.6L Duramax L5PBuyer's Guides ›
2020-2024 Chevy / GMC 2500HD / 3500HD 6.6L Duramax L5PBuyer's Guides ›
How our buyer's guides work
Most parts pages are sorted by brand or by price. That works if you already know what you want. If you do not, you end up comparing a page of lift pumps that all sound the same, with no idea which problem your truck actually has.
Our guides start with the truck. Each truck has its own buyer's guide page, and every guide on it is filtered to those years. The maintenance guide walks through the factory service schedule with fluid types and capacities, then the problems that show up as the miles add up, and what to do about each one. Where we carry a part that fixes the problem, it is right there with its fitment, so you can go from "what is wrong" to "what to buy" on one page.
Where the picks come from
We only sell diesel truck parts, and we carry the brands diesel owners trust: FASS, AirDog, Fleece, PPE, Sinister, Mishimoto, Kryptonite, BD Diesel, S&B, Bilstein, Fox and more. Because we are not tied to one brand, the pick in each guide is the part that fits the job, whether that is a budget fix for a work truck or the complete fix for a truck you plan to keep for another 200,000 miles.
The guides are written for owners who tow, work and keep their trucks for the long haul. Reliability comes first. Parts that only add power stay out of the maintenance guides.
Not sure where to start?
Our knowledgeable sales team works with diesel owners every day. Tell us your truck and how you use it, and we will help you build the right parts list.
Call 208-719-7400 Send us a messageBuyer's guide FAQ
What is an Alligator Performance buyer's guide?
It is a page built around one truck that covers what it needs and which parts we would pick. Maintenance guides cover the service schedule with fluid specs, the known failure points for your years, and the parts we carry that fix them. Every guide only shows the specs and parts that fit your truck.
Which trucks do you have buyer's guides for?
Every Ram Cummins from 1994 to 2026, every Ford F-250 and F-350 Power Stroke from 1994 to 2024, and every Chevy and GMC 2500HD and 3500HD Duramax from 2001 to 2024.
How do I know which year range my truck is in?
Use the model year on your registration, not the build date. Watch the split years: 1998.5 Rams switched to the 24 valve Cummins, 2004.5 Rams got the 600 engine, 2007.5 Rams and Duramax trucks got new engines with particulate filters, and 2004.5 GM trucks switched from the LB7 to the LLY. Each guide explains how to tell which one you have, or call our sales team with your VIN.
Are the buyer's guides only about maintenance?
Maintenance comes first because it protects the truck you already own and it is the question we get most. More guides for each truck are on the way, and they will show up on your truck's buyer's guide page as they go live.
Will every part in a guide fit my truck?
Each product card lists its fitment, and the guides hide parts that do not fit the years you choose. Cab and chassis trucks, F-450 and 4500 trucks and heavily modified trucks can differ, so check the fitment on the product page or call us before you order.
What if my truck is not listed?
Call our sales team at 208-719-7400. We can talk you through a truck or a build the guides do not cover yet.
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