The 5.7 Hemi uses either a Mopar 68157291AA or an equivalent aftermarket filter, depending on your engine year and whether you want OEM or third-party parts
The 5.7-liter Hemi engine appears in Dodge, Jeep, and Ram vehicles across multiple generations, and the correct oil filter varies slightly by model year and production date. Mopar's 68157291AA is the factory-original part number for most 5.7 Hemis built from 2003 onward, though some earlier models and certain applications use 68065145AA. The difference matters because using the wrong filter can affect oil flow, bypass valve performance, and engine protection.
Your owner's manual lists the exact part number for your vehicle, but you can also find it by entering your VIN into Mopar's parts catalog or asking a Dodge, Jeep, or Ram dealer. If you choose an aftermarket filter instead, the equivalent products from Fram, Motorcraft, Purolator, and Wix all meet the same specifications — but the part number on the box will be different from the Mopar number.
Key Takeaways
- Mopar 68157291AA is the factory filter for most 5.7 Hemi engines, though some model years use 68065145AA instead.
- Your vehicle's VIN and owner's manual are the most reliable sources for the correct part number for your specific engine.
- Aftermarket filters from major brands meet the same performance standards as OEM filters but carry different part numbers.
- The filter's bypass valve and micron rating affect how well your engine stays protected during cold starts and high-mileage operation.
How to Find Your Exact Filter Number
The safest way to get the right filter is to check your owner's manual under the maintenance section — it will list the Mopar part number and the filter's specifications. If you no longer have the manual, you can read a PDF version from Mopar's website by entering your VIN, or you can call a Dodge, Jeep, or Ram dealer with your VIN and they will tell you the correct number in seconds.
You can also look at the filter canister itself if you have recently changed it or can see the engine bay clearly. The part number is printed on the side of the filter in white or black text. Write it down and keep it with your maintenance records so you do not have to look it up again.
Mopar OEM Filters vs. Aftermarket Equivalents
Mopar filters are made to the exact specifications Chrysler engineers designed for the 5.7 Hemi, and they carry a warranty that covers defects. The factory filter for most years is the 68157291AA, which has a 10-micron absolute rating and a bypass valve set to open at 11 psi. This means it will trap particles down to 10 microns in size under normal conditions, and if the filter clogs, the bypass valve opens to keep oil flowing rather than starving the engine.
Aftermarket filters from Fram (part number TG3614), Motorcraft (FL-910S), Purolator (PL14610), and Wix (51515) all meet or exceed these same specifications. They cost less than OEM filters and perform identically in most driving conditions. The trade-off is that Mopar filters come with Chrysler's warranty, while aftermarket filters come with the manufacturer's warranty — usually one year or the life of the filter, whichever comes first.
Some owners prefer OEM filters for peace of mind; others rotate between brands to save money. Neither choice is wrong as long as the filter meets the correct micron rating and bypass pressure for your engine.
Why Filter Specifications Matter for Your Hemi
The 5.7 Hemi produces 370 to 390 horsepower depending on the model year, and it runs at higher oil pressures than many smaller engines. A filter with the wrong bypass valve pressure can either restrict oil flow (if the valve opens too late) or allow unfiltered oil to bypass the media (if the valve opens too early). Either scenario reduces engine protection and can lead to accelerated wear on bearings, pistons, and valve components.
The micron rating also matters. A filter rated at 20 microns will let more particles through than a 10-micron filter, which means more wear over time. The 5.7 Hemi's tight tolerances — especially in the hydraulic valve lifters and cam followers — benefit from the finer filtration that a 10-micron filter provides. This is why Mopar and major aftermarket brands all specify 10 microns for this engine.
Installation and Maintenance Intervals
The 5.7 Hemi filter is located on the driver's side of the engine block, accessible from above without removing the wheel or undercarriage. You will need an oil filter wrench (usually a 74 mm or 3-inch socket-style wrench) to remove and install it. The filter threads onto a threaded port, and you hand-tighten it until the rubber gasket contacts the mounting surface, then turn it an additional three-quarter turn.
Chrysler recommends changing the oil and filter every 10,000 miles under normal driving conditions, or every 3,000 miles if you tow, idle frequently, or drive in dusty conditions. If you use synthetic oil, you may be able to extend intervals to 10,000 miles even under moderate towing. Always check your owner's manual for the specific interval that applies to your vehicle and driving habits.
Common Filter Mistakes to Avoid
The most common mistake is over-tightening the filter, which can damage the rubber gasket and cause leaks. Hand-tighten until the gasket touches, then turn three-quarter turn more — no wrench needed. If you use a wrench, you are likely over-tightening.
Another mistake is buying a filter based on price alone without checking the part number. A filter that looks similar but carries a different number may have a different bypass valve pressure or micron rating, and using it can reduce oil flow or protection. Always verify the part number matches your owner's manual or the Mopar catalog before you buy.
A third mistake is forgetting to replace the rubber gasket on the filter housing itself. Some filter housings have a reusable gasket that sits in a groove; if you do not clean and re-seat it properly, the new filter will not seal and oil will leak past it. Check your owner's manual or the filter housing itself to see whether your Hemi has a replaceable gasket or a fixed one.
Where to Buy the Right Filter
Mopar filters are sold at Dodge, Jeep, and Ram dealerships, and they are also available from online retailers like RockAuto, Amazon, and eBay. Aftermarket filters are sold at AutoZone, O'Reilly, NAPA, Advance Auto Parts, Walmart, and most tire shops. Prices for OEM filters typically range from $8 to $15, while aftermarket filters range from $5 to $12, depending on the brand and retailer.
If you order online, make sure the seller ships to your location and that the part number on the listing matches the number in your owner's manual. Some retailers list multiple part numbers for the same filter, so double-check before you check out.
Frequently Asked Questions
Can I use a different filter if the Mopar number is out of stock?
Yes, as long as the replacement filter has the same 10-micron rating and 11 psi bypass valve pressure. Check the filter's specification sheet or the box to confirm these numbers match. Most major aftermarket brands publish this information online or on the packaging.
What happens if I use a filter with the wrong bypass valve pressure?
A valve that opens too early allows unfiltered oil to bypass the media and circulate through the engine, reducing protection. A valve that opens too late can restrict oil flow and starve the engine of lubrication. Either scenario increases wear on internal components and can shorten engine life.
Do I need to change the filter every time I change the oil?
Yes, the filter should be replaced at every oil change. The filter media becomes saturated with contaminants over time, and reusing a filter defeats the purpose of changing the oil. A new filter ensures maximum protection until the next change interval.
Is synthetic oil compatible with the 5.7 Hemi filter?
Yes, synthetic oil works with the same filter as conventional oil. The filter's micron rating and bypass valve pressure do not change based on oil type. Some owners use synthetic oil to extend change intervals, but the filter itself remains the same.
Where exactly is the oil filter located on a 5.7 Hemi?
The filter is mounted vertically on the driver's side of the engine block, just below the intake manifold. You can access it from above without removing wheels or undercarriage panels. The threaded housing is clearly visible once you open the hood.