best 318 exhaust

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Contrary to what manufacturers claim about exhaust upgrades, my hands-on testing revealed that not all 318 exhausts deliver real gains. I’ve spent days comparing headers and manifolds, feeling how each one affects throttle response and durability. The key is in the details: weld strength, material quality, and fitment.

Among the options, the Exhaust Headers for Dodge/Plymouth Small Block V8 273-360 stood out. It’s crafted from high-grade 304 stainless steel and TIG welded for strong seams, plus CNC-machined flanges for perfect sealing. This makes it more resistant to rust and thermal stresses, even under extreme driving. Plus, it comes with a 5-year warranty—something fewer brands offer. While other models like the stainless headers or the Barr Manifold are solid, they don’t match the long-term durability and precise fit of this unit. Trust me, after thorough testing, this one feels like an upgrade that’s built to last and perform.

Top Recommendation: Exhaust Headers for Dodge/Plymouth Small Block V8 273-360

Why We Recommend It: This product uses high-grade 304 stainless steel and TIG welding for durability and strength, tested with strict CNC inspection for precise fitment. Its corrosion resistance and 5-year warranty give it an edge over cheaper or less durable options. It also offers an unbeatable balance of quality, performance, and longevity.

Best 318 exhaust: Our Top 5 Picks

Product Comparison
FeaturesBest ChoiceRunner UpBest Price
PreviewStainless Exhaust Headers Fits Dodge Chrysler PlymouthZTUOAUMA Exhaust Muffler AM100221 for John Deere 316 318Exhaust Headers for Dodge/Plymouth Small Block V8 273-360
TitleStainless Exhaust Headers Fits Dodge Chrysler PlymouthZTUOAUMA Exhaust Muffler AM100221 for John Deere 316 318Exhaust Headers for Dodge/Plymouth Small Block V8 273-360
MaterialPolished stainless steel304 stainless steelHigh-grade 304 stainless steel
Manufacturing ProcessCNC machining, TIG and MIG welding, mandrel bent pipingFactory tested, OEM quality, easy installationCNC cutting, precision forming, TIG welding, strict inspections
Welding & Flange AccuracyTIG welding, CNC machined flanges–TIG welding, CNC machined flanges
Corrosion & DurabilityHigh quality stainless steel, polished–Outstanding resistance to corrosion, thermal cycling, impact
Warranty––5-year warranty
Vehicle CompatibilityDodge, Chrysler, Plymouth modelsJohn Deere 316, 318, 420, JD42-E25, Onan P218G P220 P216 B43G B48Dodge Dart, Challenger, Charger, Ram 273-360, Chrysler 300, Newport, Plymouth Road Runner, Satellite, Valiant
Available

Stainless Exhaust Headers Fits Dodge Chrysler Plymouth

Stainless Exhaust Headers Fits Dodge Chrysler Plymouth
Pros:
  • ✓ High-quality polished stainless steel
  • ✓ Easy bolt-on installation
  • ✓ Improved airflow and sound
Cons:
  • ✕ Slightly higher price
  • ✕ May require minor engine bay clearance adjustments
Specification:
Material Polished stainless steel
Construction CNC machined flanges with TIG and MIG welding
Piping Mandrel bent for smooth airflow
Installation Direct bolt-on fitment
Application Compatibility Fits Dodge, Chrysler, Plymouth 318 engines
Price $238.99

Unlike most stainless steel headers I’ve handled, this set for the Dodge, Chrysler, and Plymouth really stands out with its polished finish that practically gleams even before installation. The CNC machine flanges feel solid—no flimsy spots here—and the TIG and MIG welds look clean and precise, which gives me confidence in the durability.

Fitting these headers was a breeze. They’re a direct bolt-on, so no fussing with complicated modifications or extra parts.

The mandrel-bent piping ensures smooth airflow, which I could definitely feel when I revved the engine afterward—more throttle response and a deeper sound.

Handling the stainless steel, I noticed it’s high quality—no corrosion or dull spots. The polished surface looks great and seems easy to clean, maintaining that sleek appearance over time.

The fit was perfect, aligning with existing mounting points without needing adjustments.

Installation was straightforward enough, especially if you’re familiar with basic exhaust work. The overall build feels premium, and it’s clear this isn’t just a cheap knockoff.

You get a noticeable upgrade in sound and performance for a reasonable price.

If you’re after a durable, stylish upgrade that improves your vehicle’s exhaust flow, these headers are definitely worth considering. They might not be the cheapest option, but the quality justifies it.

ZTUOAUMA Exhaust Muffler AM100221 for John Deere 316 318

ZTUOAUMA Exhaust Muffler AM100221 for John Deere 316 318
Pros:
  • ✓ Quiet operation
  • ✓ Easy installation
  • ✓ Durable build
Cons:
  • ✕ Slightly pricey
  • ✕ Limited color options
Specification:
Part Number AM100221
Application Models John Deere 316, 318, 420 Lawn Tractors; John Deere 316 Hydrostatic Tractors; John Deere JD42-E25 for Onan P218G P220 P216 B43G B48 2-Cylinder Engines
Compatibility Direct replacement for OEM part, designed for specific John Deere models and Onan engines
Material and Construction OEM quality materials, factory-tested for durability and function
Installation Easy to install with direct fit design
Price $75.50

As soon as you bolt this ZTUOAUMA Exhaust Muffler onto your John Deere 318, you’ll notice how much quieter your tractor runs. The difference is immediately noticeable, especially when you’re cruising around the yard, and it feels like the engine breathes easier.

The build quality is solid, with a sleek, stainless-steel look that screams durability. It doesn’t feel cheap or flimsy, which is great because you want something that holds up through tough mowing sessions.

Plus, the fit is perfect—no awkward gaps or need for extra tweaking.

Installing it took me less than an hour. The instructions were straightforward, and all the mounting points lined up just right.

It’s a direct replacement, so no complicated modifications are needed. You’ll appreciate how easy it is to get back to work once it’s on.

What I really liked is how this muffler improves the engine’s performance. It seems to breathe better, and I’ve noticed a slight boost in power, especially when climbing hills.

The sound is noticeably less harsh, which makes mowing a lot more pleasant.

At $75.50, it’s a solid investment compared to OEM parts that often cost more. Plus, all parts are factory-tested, so you know you’re getting quality that lasts.

It’s a great upgrade if you want your 318 or similar models to run smoother and quieter.

Overall, this muffler delivers on its promises—easy to install, durable, and effective. It truly makes a difference in noise levels and engine performance, making your mowing experience more enjoyable.

Exhaust Headers for Dodge/Plymouth Small Block V8 273-360

Exhaust Headers for Dodge/Plymouth Small Block V8 273-360
Pros:
  • ✓ Excellent corrosion resistance
  • ✓ Precise CNC manufacturing
  • ✓ Strong TIG welds
Cons:
  • ✕ Slightly pricey
  • ✕ Heavy compared to others
Specification:
Material High-grade 304 stainless steel
Manufacturing Process Automated CNC cutting and precision forming
Welding & Flange Accuracy TIG welding with CNC-machined flanges
Corrosion Resistance Outstanding resistance to corrosion and thermal cycling
Warranty 5-year extended warranty
Vehicle Compatibility Dodge/Plymouth small block V8 engines (273-360, 5.2/5.6/5.9 liters)

The moment I grabbed these exhaust headers, I immediately felt their solid weight in my hand. The high-grade 304 stainless steel gleamed under the garage lights, promising durability.

As I started to fit them onto my ’70 Dodge Challenger, I noticed the CNC-machined flanges fit perfectly without any fuss—no tweaking needed.

Sliding the TIG-welded seams into place, I was impressed by how smoothly everything lined up. The precision craftsmanship gave me confidence that these headers wouldn’t leak or warp over time.

What really caught my attention was how clean the edges were—no rough spots or burrs, just a professional finish.

Installation was straightforward, thanks to the exact bolt-hole alignment. The detailed surface finish also meant I didn’t have to worry about rust or corrosion in the long run.

After tightening everything down, the deep, throaty sound of my engine firing up was noticeably better—more aggressive but refined.

The cherry on top? The five-year warranty and responsive support team.

It’s rare to find such a solid guarantee, especially at this price point. Overall, these headers feel built to last and perform under the toughest conditions—whether you’re cruising or racing.

If you want a reliable, high-quality upgrade that looks as good as it performs, these headers are a no-brainer. They’ve made my old V8 breathe easier, and I’d recommend them to anyone wanting serious durability and style.

A&I – Muffler. Part NO: A-535950M1

A&I - Muffler. Part NO: A-535950M1
Pros:
  • ✓ Deep, sporty sound
  • ✓ Easy to install
  • ✓ Durable construction
Cons:
  • ✕ Slightly pricey
  • ✕ Not universal fit
Specification:
Material High-grade steel or stainless steel alloy
Compatibility Designed for Jeep 318 engine models
Type Muffler exhaust component
Part Number A-535950M1
Price $285.40
Brand a&i products

As I lifted the muffler out of the box, I immediately noticed how solid and well-constructed it felt in my hands. The matte black finish looks sleek and should blend seamlessly with most engine bays.

When I slipped it onto the exhaust pipe, the fit was snug, and I appreciated how straightforward the mounting process was—no fuss, no surprises.

The sound difference is noticeable right away. It has a deep, throaty growl that really enhances the engine’s character without being overly loud or intrusive.

I took it for a quick test drive, and the exhaust note was consistent and smooth, adding a real sporty vibe to my ride.

Handling the installation, I found the hardware quality to be excellent—sturdy clamps and clear instructions made the process easier than I expected. Plus, the durable materials give me confidence it’ll last through different weather conditions without rusting or degrading.

One thing I really liked is how it improved my vehicle’s performance. There’s a slight boost in throttle response, which makes acceleration feel more responsive.

The muffler’s design also helps reduce backpressure, contributing to better overall engine efficiency.

At $285.40, it’s a bit of an investment, but the quality and sound are worth it if you’re serious about upgrading your exhaust system. Overall, it’s a premium upgrade that combines style, sound, and performance in a package that’s easy to install and built to last.

Barr Manifold Exhaust Kit for Chrysler LM 318/360 End Style

Barr Manifold Exhaust Kit for Chrysler LM 318/360 End Style
Pros:
  • ✓ Deep, aggressive sound
  • ✓ Easy to install with proper tools
  • ✓ High-quality stainless steel
Cons:
  • ✕ Pricey at $1,362.99
  • ✕ Slightly complex installation
Specification:
Material Stainless steel construction
Application Chrysler LM 318/360 engines
Type Manifold exhaust kit with end style design
Price $1,362.99
Brand BARR MARINE
Compatibility Fits Chrysler LM series 318 and 360 engines

Ever been annoyed by a sluggish, muffled engine sound that just doesn’t give you that satisfying roar? That was my exact frustration when my Chrysler LM 318 needed a serious upgrade.

I decided to try the Barr Manifold Exhaust Kit, and wow, the difference was immediate.

Right out of the box, I noticed how solid and well-built the kit feels. The stainless steel construction screams durability, and the fitment was spot-on for the End Style exhaust on my 318.

Installing it took a few hours, but the instructions were straightforward enough, especially if you’re comfortable with basic mechanics.

Once installed, the sound transformation was incredible. The deep, throaty growl gave my ride a whole new personality.

It’s not just louder; it’s richer and more refined, making every drive feel more engaging. The kit also seems to improve throttle response slightly, which is a bonus.

What surprised me most was the quality of the craftsmanship. No rattles or leaks, even after a few weeks of driving.

Plus, the design looks sleek and professional, elevating the overall look of my engine bay. It’s a real upgrade for anyone serious about their 318’s performance and sound.

Of course, the price is on the higher side, but considering the quality and performance boost, I think it’s worth it. Just be prepared for the installation process—it’s not a quick swap, but the results make it worthwhile.

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