What Oil Filter Does the Briggs and Stratton Cv40 Take?

The Briggs and Stratton CV40 engine uses the Briggs & Stratton 492932S oil filter as the standard replacement. This is the exact oil filter recommended by the manufacturer for proper fit and performance. Some compatible alternatives include 696854 and other cross-reference filters, but 492932S is the most commonly approved option for the CV40 engine.

Choosing the correct oil filter for your Briggs and Stratton CV40 is very important. The right filter keeps engine oil clean by trapping dirt, metal particles, and debris. A clean oil system helps the engine run smoothly, last longer, and perform at its best, especially in lawn tractors and riding mowers.

Before buying, always double-check your engine model number to confirm compatibility. Using a genuine or high-quality replacement oil filter ensures better protection and reduces the risk of engine damage. Regular oil and filter changes will keep your Briggs and Stratton CV40 working efficiently for many years.

Key Takeaways

• Use the Briggs & Stratton 492032S oil filter for all CV40 models—it’s the OEM-recommended choice.
• Compatible aftermarket filters include Kohler 12 050 01-S and Fram PH3614, offering reliable alternatives.
• Replace the oil filter every 50 hours of operation or annually—whichever comes first—for optimal engine life.
• Always lubricate the new filter’s gasket with fresh oil before installing to prevent leaks and ensure a proper seal.
• Check your owner’s manual first—some CV40 variants may have slight differences based on production year or application.
• Use a torque wrench when tightening to avoid over-tightening, which can damage the filter or engine block.
• Dispose of used oil and filters responsibly at approved recycling centers to protect the environment.

Quick Answers to Common Questions

What’s the best oil filter for a Briggs & Stratton CV40?

The Briggs & Stratton 492032S is the OEM-recommended filter and the top choice for CV40 engines. It offers reliable filtration and a perfect fit.

Can I use a Kohler filter on my B&S CV40?

Yes, the Kohler 12 050 01-S is a direct cross-reference and works perfectly in the CV40 engine.

How often should I change the oil filter?

Replace the oil filter every 50 hours of use or once a year—whichever comes first—to maintain engine health.

Do I need to add oil to the new filter before installing?

No, but you should lightly coat the rubber gasket with fresh oil to ensure a proper seal and prevent leaks.

What happens if I use the wrong oil filter?

Using an incompatible filter can cause leaks, poor oil flow, or engine damage due to inadequate filtration.

What Oil Filter Does the Briggs and Stratton CV40 Take?

If you own a lawn mower, generator, or other small equipment powered by a Briggs & Stratton CV40 engine, you know how important regular maintenance is. One of the most critical—and often overlooked—tasks is changing the oil filter. But here’s the big question: What oil filter does the Briggs and Stratton CV40 take?

The good news? It’s simpler than you might think. The CV40 engine uses a standard spin-on oil filter that’s widely available and easy to replace. In this guide, we’ll walk you through everything you need to know—from identifying the right filter to installing it correctly—so your engine stays clean, cool, and efficient for years to come.

Why the Right Oil Filter Matters

Before we dive into the specifics, let’s talk about why using the correct oil filter is so important. The oil filter plays a vital role in your engine’s health. It traps dirt, metal particles, and sludge that can build up in the oil over time. Without a functioning filter, these contaminants circulate through the engine, causing wear, overheating, and potentially costly damage.

The Briggs & Stratton CV40 is a durable, overhead valve (OHV) engine commonly found in residential lawn mowers and light-duty equipment. It’s designed for reliability, but like any engine, it needs proper care. Using the wrong filter—or skipping filter changes altogether—can shorten its lifespan significantly.

Identifying the Correct Oil Filter for the CV40

The official, factory-recommended oil filter for the Briggs & Stratton CV40 is the Briggs & Stratton 492032S. This is a high-quality, OEM (original equipment manufacturer) filter designed specifically for B&S engines, including the CV40 series.

But what if you can’t find the 492032S in stock? Don’t worry—there are reliable aftermarket options that are fully compatible.

Compatible Aftermarket Filters

Here are three widely accepted alternatives:

• Kohler 12 050 01-S – A direct cross-reference for the 492032S, often used in Kohler engines but fully compatible with B&S CV40.
• Fram PH3614 – A popular choice among DIYers, known for consistent performance and availability.
• Champion CL108 – Another solid option with good filtration and a secure seal.

All of these filters share the same thread size (3/4″-16), base diameter (2.8 inches), and height (3.1 inches), making them direct replacements.

How to Confirm Compatibility

Even with compatible filters, it’s smart to double-check. Here’s how:

1. Check your owner’s manual – Look for the “Specifications” or “Maintenance” section. It should list the recommended filter part number.
2. Inspect the old filter – If you’re replacing an existing filter, note the brand and part number printed on the side.
3. Use a cross-reference chart – Many auto parts stores and online retailers (like Amazon or O’Reilly) offer filter lookup tools. Enter your engine model (CV40) to see compatible options.

Pro tip: If your CV40 was made before 2000, confirm the engine’s serial number. Early models sometimes used slightly different oiling systems, though the 492032S still fits most.

Step-by-Step Guide to Replacing the Oil Filter

Now that you’ve got the right filter, let’s replace it the right way. Follow these steps for a clean, leak-free installation.

Tools and Supplies You’ll Need

• New oil filter (Briggs & Stratton 492032S or equivalent)
• Fresh SAE 30 or 10W-30 detergent oil (check manual for exact type)
• Oil drain pan
• Socket wrench or oil filter wrench
• Clean rag or paper towels
• Funnel (optional)
• Gloves (recommended)

Step 1: Warm Up the Engine

Start your engine and let it run for 2–3 minutes. Warm oil flows more easily, helping you drain more of the old oil. Never drain oil from a cold engine—it will be thick and leave behind sludge.

Step 2: Turn Off and Disconnect Spark Plug

Safety first! Turn off the engine and disconnect the spark plug wire. This prevents accidental starts while you’re working.

Step 3: Drain the Old Oil

Locate the oil drain plug (usually on the side or bottom of the engine). Place the drain pan underneath, then remove the plug and let the oil drain completely. This may take 5–10 minutes.

Step 4: Remove the Old Oil Filter

The oil filter is typically mounted on the side of the engine block. Use an oil filter wrench if it’s tight. Turn it counterclockwise until it loosens. Be ready—some oil may spill out, so keep your drain pan handy.

Once removed, inspect the old filter. If it’s clogged, dark, or has metal flakes, your engine may need a deeper inspection.

Step 5: Prepare the New Filter

Before installing, take a moment to prepare the new filter:

• Wipe the engine’s filter mounting surface with a clean rag to remove dirt or old gasket material.
• Dip your finger in fresh oil and lightly coat the rubber gasket on the new filter. This helps create a better seal and prevents the gasket from tearing during installation.

Step 6: Install the New Filter

Screw the new filter onto the engine by hand. Turn it clockwise until the gasket makes contact with the engine surface. Then, give it an additional ¾ to 1 full turn—no more. Over-tightening can damage the gasket or the engine block.

Step 7: Refill with Fresh Oil

Replace the drain plug and tighten it securely (but don’t overtighten). Use a funnel to pour in the recommended amount of fresh oil—usually about 1.7 to 2 quarts for the CV40, depending on the model. Check the dipstick to ensure the oil level is correct.

Step 8: Reconnect and Test

Reconnect the spark plug wire. Start the engine and let it run for 1–2 minutes. Check around the filter and drain plug for leaks. If everything looks good, turn off the engine and recheck the oil level. Top off if needed.

Maintenance Schedule and Best Practices

Replacing the oil filter isn’t a one-time task. To keep your CV40 running smoothly, follow this maintenance schedule:

• Every 50 hours of operation – Change the oil and filter.
• Annually (even with low use) – Replace the filter at least once per year to prevent sludge buildup.
• Before long-term storage – Change the oil and filter to remove moisture and acids that can corrode internal parts.

Additional Tips

• Use only detergent motor oil rated for small engines (look for “SJ” or higher on the label).
• Avoid synthetic oils unless specified—some older CV40 models may not be compatible.
• Keep a maintenance log to track hours and service dates.
• Store spare filters in a cool, dry place to prevent gasket deterioration.

Troubleshooting Common Issues

Even with the right filter, problems can arise. Here’s how to handle common issues:

Oil Leak After Installation

• Cause: Over-tightened filter, damaged gasket, or dirt on the mounting surface.
• Solution: Turn off the engine, remove the filter, clean the area, re-lubricate the gasket, and reinstall with proper torque.

Filter Won’t Tighten or Feels Loose

• Cause: Wrong filter size or cross-threading during installation.
• Solution: Confirm filter compatibility and reinstall carefully by hand first.

Engine Runs Rough After Oil Change

• Cause: Air trapped in the oil system or incorrect oil level.
• Solution: Let the engine run for a few minutes, then recheck the oil level and top off if needed.

Conclusion

So, what oil filter does the Briggs and Stratton CV40 take? The answer is simple: the Briggs & Stratton 492032S is the best choice, with reliable alternatives like the Kohler 12 050 01-S and Fram PH3614 also available.

By using the correct filter and following proper installation steps, you’ll protect your engine from wear, extend its life, and maintain peak performance. Regular oil and filter changes are small tasks that make a big difference—so don’t skip them.

Whether you’re a weekend warrior or a seasoned DIYer, this guide gives you everything you need to keep your CV40 engine in top shape. Stay proactive, stay informed, and your equipment will thank you with years of reliable service.