The NAPA 1348 oil filter is a widely used spin-on filter that shares specifications with the WIX 51348 and Fram PH3614.
It is commonly used in older Toyota, Chrysler/Mopar, Jeep, and some Ford and Mazda engines that require a 3/4″-16 threaded, short-canister filter.
Built with a 3/4″-16 thread and a short canister design, it’s commonly found on classic Toyota 22R/22RE engines, Dodge four-cylinder K-car platforms, and even some Jeep Wrangler 2.5L setups.
But before slapping one on, there’s more to consider. Filter height, bypass pressure, and gasket diameter all play a role in ensuring a proper fit.
Some engines might require a taller version, while others need a filter with a specific bypass rating. So, does the NAPA 1348 fit your engine, or should you be looking at an alternative? Let’s break it down.
1. Technical Specifications: Breaking Down the NAPA 1348
Not all oil filters are created equal, and the NAPA 1348 is no exception. If you’re looking for the specifics—thread size, gasket diameter, bypass pressure—this section breaks it down so you know exactly what you’re working with.
Whether you’re cross-referencing for a replacement or checking compatibility, these details matter.
Thread Size and Compatibility
The NAPA 1348 uses a 3/4″-16 thread, a common size across many older Toyota, Chrysler/Mopar, and Mitsubishi engines. If your vehicle’s filter housing requires a different thread pitch, this won’t be a match—always verify before installation.
Gasket Dimensions
Getting the gasket size right is crucial to prevent leaks. The 1348’s gasket specifications are:
• Outer Diameter: ~2.8 inches
• Inner Diameter: ~2.43 inches
This ensures a tight seal against the engine’s mounting surface without excess overhang.
Canister Size and Build
The 1348 follows the compact short-canister design, making it ideal for vehicles with limited clearance:
• Outer Diameter: ~2.99 inches
• Height: ~3.44 inches
Some vehicles may accommodate a longer version of this filter for increased oil capacity. If you have room, an extended filter (such as the NAPA 1515) could be an option.
Bypass Valve and Anti-Drainback Features
Inside the filter, the bypass valve plays a key role in maintaining oil flow when the filter media becomes clogged, with a bypass valve pressure typically ranging from 8 to 11 PSI, though this can vary slightly by manufacturer.
When switching from a filter like the Fram PH3614, which features a 12 PSI bypass, it’s important to consider whether the lower range is suitable for your engine.
This design ensures that even if the filter becomes restricted, oil continues to circulate, preventing starvation. Additionally, the anti-drainback valve is included to retain oil in the system, allowing for quicker lubrication during cold starts.
What This Means for You
If your engine calls for a 3/4″-16 threaded short oil filter, the NAPA 1348 could be a great fit. However, minor variations in bypass valve pressure, canister length, or anti-drainback valve material could make a difference depending on your vehicle’s design.
2. Where the NAPA 1348 Fits: Common Vehicle Applications
The NAPA 1348 is a go-to filter for many older Toyota, Chrysler, Jeep, and Mitsubishi engines. It’s commonly cross-referenced with the WIX 51348 and Fram PH3614, meaning it shares specifications with several factory-recommended filters.
If you’re wondering whether this filter fits your vehicle, let’s go through the most common applications.
Toyota: A Trusted Fit for Classic Four-Cylinders
Primary Engines That Use the 1348
• 2.4L 22R/22RE – Found in Toyota Pickup (1980s–1995), early 4Runner models
• 1.6L/1.8L 4A/4E Series – Some older Corolla and Celica models (1980s–1990s)
What You Need to Know
For Toyota owners, the 22R and 22RE engines are among the most common users of this filter.
These legendary inline-fours are known for their reliability, and using the right filter ensures proper oil flow and longevity. Placement is straightforward—typically mounted on the side of the block, making filter swaps easy.
However, Toyota transitioned from 3/4″-16 threaded filters to metric-threaded filters (M20x1.5) in many models during the late 1990s and early 2000s.
Before using the NAPA 1348 on a Toyota engine, verify that your specific model hasn’t switched to a metric-threaded filter like the 90915-YZZF1.
Chrysler and Mopar: Covering Older Four-Cylinders
Dodge and Chrysler Models That Use the 1348
• 2.2L / 2.5L Inline-Fours – Used in various Chrysler/Dodge cars (1980s–1990s)
• Jeep 2.5L Four-Cylinder – Found in some early Jeep Wrangler YJ models
What You Need to Know
Dodge’s K-car era four-cylinders, found in vehicles like the Aries, Shadow, and Daytona, relied on filters like the NAPA 1348.
Older Jeep 2.5L Wrangler models used this filter, but some later versions transitioned to a metric-threaded filter (M20x1.5). Always verify your engine’s thread specification before selecting a replacement.
If you have an older Chrysler or Jeep, make sure your engine still uses the 3/4″-16 thread before assuming the 1348 is a direct swap. Some models moved to metric-threaded filters in the late ’90s.
Mitsubishi and Hyundai: Less Common, But Still Relevant
Older Mitsubishi and Hyundai Applications
• Some 2.0L and 2.4L Mitsubishi inline-fours (1980s–1990s)
• Select Hyundai models using Mitsubishi-based engines
What You Need to Know
Mitsubishi used this filter style in some of their mid-sized four-cylinder engines, particularly in regional markets where oil filter specs varied.
If you own a Hyundai from this era, it may have a licensed Mitsubishi powertrain, meaning it could take the same 1348 filter.
Is Your Vehicle Compatible?
While these are the most well-documented matches, always verify fitment by:
• Checking your owner’s manual
• Matching the OEM filter number to a NAPA/WIX cross-reference
• Confirming your engine’s thread pitch (3/4″-16) and filter size requirements
If you’re driving a classic Toyota, an older Dodge, or a Jeep Wrangler YJ, there’s a strong chance the NAPA 1348 is a perfect fit.
3. Benefits and Potential Limitations of the NAPA 1348
Like any oil filter, the NAPA 1348 has its advantages and potential drawbacks depending on the vehicle and driving conditions. If you’re considering this filter, here’s what you need to know.
Why the NAPA 1348 Is a Reliable Choice
1. Readily Available and Easy to Find
This filter shares compatibility with the WIX 51348, Fram PH3614, and other widely used filters. That means you’ll find it stocked in most auto parts stores, making replacements hassle-free.
2. Direct Cross-Reference to OEM Filters
Many Toyota, Chrysler, Jeep, and Mitsubishi engines originally came with filters that the NAPA 1348 can directly replace. This ensures it meets essential fitment and performance requirements.
3. Proven Filtration Quality
• Uses a cellulose/synthetic blend media to capture contaminants
• Includes an anti-drainback valve to prevent dry starts
• Designed to handle standard oil change intervals for older four-cylinder engines
Where the 1348 Might Fall Short
1. Some Models May Require a Longer Filter
While the NAPA 1348 is a short canister filter, some vehicles (especially Jeeps and older Toyota trucks) may benefit from a taller filter to increase oil capacity and filtration surface area. If your vehicle has space for a taller filter, consider:
• NAPA Gold 1515 (WIX 51515) – A longer version offering increased oil capacity.
• Fram PH8A – A similar extended filter, commonly used in Ford and Chrysler applications.
2. Variations in Bypass Pressure and Valve Materials
Not all oil filters have the same bypass valve settings or anti-drainback valve materials. If your engine requires a specific bypass pressure or upgraded filtration media, check whether the NAPA Gold or an OEM filter might be a better fit.
Should You Use the NAPA 1348?
For most older Toyota, Chrysler, Jeep, and Mitsubishi engines that originally used this size, the NAPA 1348 is a solid choice.
However, if you need a longer filter for better oil flow or if your engine demands a specific bypass pressure, double-check your specs before installing.
4. How to Confirm if the NAPA 1348 Fits Your Vehicle
Not all filters with the same thread size are interchangeable. Even if the NAPA 1348 is listed as a match, taking a few extra steps to verify fitment can save you from leaks, poor filtration, or installation issues.
1. Cross-Reference Your OEM Filter Number
Most manufacturers specify an OEM part number for their oil filters. Before choosing the NAPA 1348, check if it matches your vehicle’s factory-recommended filter.
To find your OEM part number, check your owner’s manual, look for under-hood service stickers, explore online parts databases for brands like Toyota, Chrysler, Jeep, or Mitsubishi, and consult dealer parts departments.
Common Cross-References for NAPA 1348:
• Toyota: 15601-33021, 15601-33020 (not 90915-YZZF1, which is metric-threaded)
• Chrysler/Jeep: 4289658, 53007563AB
• Mitsubishi: MD135737, MD352626
• WIX Equivalent: 51348
2. Check the Gasket and Thread Dimensions
Even if the thread pitch (3/4″-16) is correct, some engines have slight differences in gasket diameter or filter height. Before installation, compare the gasket sealing surface; the outer gasket diameter should align with your engine’s filter seat.
Next, measure your old filter’s height, as some models may need a slightly taller or shorter option. Lastly, inspect the anti-drainback valve type.
If your engine sits at an angle or has specific oil retention needs, ensure the filter’s anti-drainback valve meets OEM standards.
3. Look for Manufacturer Service Bulletins or Revisions
Some automakers revise their recommended oil filter specs over time. A filter that worked for a 1995 model might not be ideal for a 2005 version of the same engine.
Toyota and Jeep have updated their filter recommendations for some older models, while some Chrysler and Mitsubishi engines accept both short and extended filters depending on the application.
What If the NAPA 1348 Doesn’t Match?
If you find that your vehicle requires a different bypass pressure, anti-drainback valve design, or a taller canister, you may need to consider alternatives such as NAPA 1515, which is a taller version for higher oil capacity.
Additionally, Fram and WIX offer options tailored for specific Jeep and Chrysler engines. If you have manufacturer-specific requirements, OEM Toyota or Mopar filters may also be necessary.
Final Check Before Installing
If you’ve confirmed the correct thread size (3/4″-16), matching gasket diameter, proper canister height for clearance, and filtration and bypass specs within the recommended range, then the NAPA 1348 is a solid option for your next oil change. If there’s any doubt, cross-reference with a dealer or parts database before installing.
Final Thoughts
The NAPA 1348 oil filter is a dependable choice for older Toyota, Chrysler, Jeep, and Mitsubishi models that use a 3/4″-16 thread. Its compatibility with a range of four-cylinder and smaller six-cylinder engines makes it a widely available option.
However, not all vehicles require the same bypass pressure, anti-drainback valve, or filter height. Before installing, double-check your OEM part number, gasket size, and clearance needs.
If your engine allows for a taller filter, alternatives like the NAPA 1515 or WIX 51515 might be worth considering. If your engine originally used a short-canister 3/4″-16 threaded oil filter, the NAPA 1348 is a solid, cost-effective choice.
However, if your OEM filter has a different bypass pressure or a taller design, using a non-matching filter could alter oil flow characteristics. Always compare specifications before switching.