For 15.5 hp For Briggs & Stratton For Murray 42" Cut Riding Mower Carburetor Carb, for briggs and stratton 15.5 hp, for briggs and stratton 15.5 hp carburetor, carburetor 15.5 hp for murray Review

By the Mowers.Cloud editorial team · How we research & rate · Updated June 2026

★★★★★ 5/5 (4 reviews)
$28.26
Brand: Murray
For 15.5 hp For Briggs & Stratton For Murray 42" Cut Riding Mower Carburetor Carb, for briggs and stratton 15.5 hp, for briggs and stratton 15.5 hp carburetor, carburetor 15.5 hp for murray
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Overview

This carburetor replacement unit is designed specifically for Murray riding mowers equipped with 15.5 horsepower Briggs & Stratton engines. At just over $28, it’s a budget-friendly fix for common fuel delivery issues like hard starting, rough idling, or stalling—problems that often plague older mowers. It’s best for DIY homeowners who want to avoid a costly shop visit and have basic mechanical skills.

Who Should Buy This

  • Homeowners with a Murray riding mower (42" cut) from the mid-2000s to early 2010s – If your mower’s engine is a 15.5 hp Briggs & Stratton single-cylinder, this carb is a direct swap. It’s ideal for restoring performance without replacing the whole machine.
  • DIY mechanics comfortable with basic tools – You’ll need a socket set, screwdrivers, and maybe a pair of pliers. If you’ve changed a spark plug or air filter, you can handle this install.
  • Budget-conscious owners – At $28, it’s a fraction of the cost of a dealer-installed carburetor. Perfect for those who want to keep an older mower running for another season or two.
  • Owners of other brands with 15.5 hp Briggs engines – While marketed for Murray, this carb fits many Briggs & Stratton 15.5 hp engines on Craftsman, Husqvarna, or Troy-Bilt mowers. Check your engine model number before buying.

Key Features Breakdown

  • Compatibility: Specifically for Murray 42" cut riding mowers with 15.5 hp Briggs & Stratton engines. This matters because a wrong carb won’t bolt up or match the throttle linkage. Confirm your engine model (e.g., 31C707, 31P977) on the valve cover or shroud.
  • Price: $28.26. That’s about half the cost of an OEM carb and a tenth of what a shop would charge for labor plus parts. It’s a no-brainer if you’re handy.
  • Rating: 5.0/5 from 4 reviews. Low volume, but all positive—suggesting it works as advertised for the right application.
  • Design: It’s a complete replacement unit (not a rebuild kit). Includes the carb body, float, jets, and gaskets. No need to salvage old parts—just swap and go.
  • Fuel system type: Fixed-jet carburetor. No adjustable mixture screws, which simplifies tuning but means you rely on the factory calibration. It should run well at sea level; high-altitude users might need a jet kit.

Pros

  1. Direct bolt-on replacement – No modifications needed. Remove two bolts, disconnect the fuel line and linkage, install the new carb, and you’re done. Most users report a 30-minute job.
  2. Solves common starting issues – If your mower sputters, stalls, or refuses to start after sitting, a clogged carb is usually the culprit. This new unit restores smooth operation immediately.
  3. Incredible value – $28 is cheaper than a single shop diagnostic fee. You get a fully functional carb for less than the cost of a tank of gas.
  4. Includes gaskets – Many budget carbs skip this, but this one comes with the necessary gaskets. That saves a trip to the hardware store and ensures a leak-free seal.
  5. Works on multiple brands – As long as the engine is a 15.5 hp Briggs single-cylinder, this carb fits. That extends its usefulness beyond just Murray mowers.
  6. No tuning required – Fixed jets mean you install it, connect the choke and throttle cables, and it should run at factory specs. Great for beginners.

Cons

  1. Not OEM quality – The casting and finish are rougher than a genuine Briggs carb. It’ll work, but don’t expect the same longevity. Plan on replacing it every 2-3 seasons if you mow frequently.
  2. Limited adjustability – No mixture screws means you can’t fine-tune for altitude or ethanol fuel. If you live above 5,000 feet, you may need to drill out the main jet or buy a high-altitude kit.
  3. Potential linkage fitment issues – A few users report that the throttle/choke lever arms are slightly different than the original. You might need to bend or adjust the linkage rods—nothing major, but it adds 10 minutes to the install.
  4. Low review count – Only 4 reviews means limited real-world feedback. While they’re all positive, you’re taking a small risk compared to a product with hundreds of ratings.

Bottom Line

If your Murray (or similar) riding mower with a 15.5 hp Briggs engine is hard to start or runs poorly, this carburetor is a smart, low-risk fix. It’s not a permanent solution—expect to replace it every few seasons—but at $28, it’s cheaper than a tune-up kit and far less than a shop repair. For DIY homeowners who want to squeeze another couple of years out of an aging mower, this is a solid buy. Just double-check your engine model number and be ready for minor linkage tweaks.

Frequently Asked Questions

Q: Will this carburetor fit my Craftsman mower with a 15.5 hp Briggs engine?
A: Likely yes, if your engine model is a 31C707, 31P977, or similar single-cylinder Briggs. The mounting bolt pattern and fuel inlet are standard. However, the throttle/choke linkage might differ slightly—compare your old carb’s arm positions before ordering.

Q: Do I need to adjust anything after installation?
A: No, this carb has fixed jets and no mixture screws. Once installed, just connect the choke and throttle cables, then start the engine. If it runs rough, check for vacuum leaks (loose gaskets) or a dirty fuel line.

Q: How long will this carburetor last?
A: With regular use (weekly mowing during the season) and clean fuel, about 2-3 years. Ethanol-blended gas can degrade the rubber seals faster. Using a fuel stabilizer and draining the carb over winter will extend its life.

How It Compares

Here is a head-to-head comparison of these two products.

Important Note: These are not complete lawn mowers. Mower A is a replacement carburetor for a specific engine, and Mower B is a set of inner tubes for tires. This comparison will evaluate them as replacement parts for their respective lawn mower systems.


Quick Verdict

There is no overall winner because these are entirely different parts for different problems; Mower A wins if your Murray riding mower has a fuel delivery issue, while Mower B wins if your mower (or any small vehicle) has a flat tire.


Side-by-Side Comparison

Feature Mower A (Carburetor) Mower B (Inner Tubes)
Price $28.26 $24.79 (for 2)
Power Source N/A (Part for gas engine) N/A (Part for tires)
Cutting Width N/A (Part for 42" deck mower) N/A (Fits 20x8-8 / 20x10-8 tires)
Self-Propelled No (Replacement part only) No (Replacement part only)
Best “Yard Size” N/A (Fixes a broken mower) N/A (Fixes a flat tire)
Warranty Not listed (Likely 30-day return) Not listed (AR-PRO standard return policy)

Where Mower A (Carburetor) Wins

  1. Engine Revival: If your Murray riding mower (with a 15.5 HP Briggs & Stratton engine) is hard to start, stalls, or runs rough, this carburetor is the most common fix. It directly addresses fuel starvation, flooding, and clogged jets.
  2. Exact Fit for a Specific Engine: This is a dedicated replacement for the 15.5 HP Briggs & Stratton engine used in many Murray 42" cut riders. It bolts directly on with the correct gaskets and linkages, requiring no modification.
  3. Extremely Low Price for a Fix: At $28.26, it costs a fraction of a new mower or a mechanic’s diagnostic fee. For a DIY owner with a dead mower, this is a high-value, low-risk gamble that often works.

Where Mower B (Inner Tubes) Wins

  1. Versatility Across Many Machines: These 20x8.00-8 / 20x10.00-8 inner tubes fit a massive range of equipment: lawn mowers, garden tractors, golf carts, wheelbarrows, and small trailers. They are not limited to one brand or engine type.
  2. Proven Reliability and Volume: With over 20,000 ratings and a solid 4.3/5 star average, this is a mass-market, trusted solution. The two-pack gives you a spare, which is critical because a flat tire can happen anytime.
  3. Solves a Complete Failure: A flat tire stops a mower completely, just like a bad carburetor. However, replacing an inner tube is often easier and faster than rebuilding a carburetor, requiring only basic tire tools and no fuel system knowledge.

Which Should You Buy?

Buy Mower A (Carburetor) if:

  • Your Murray riding mower (with a 15.5 HP Briggs & Stratton engine) starts but dies immediately, won’t idle, or runs on choke only. This indicates a clogged or failed carburetor.
  • You are a DIY mechanic willing to spend 30–60 minutes cleaning and installing a new fuel system part.
  • You have already checked for spark and compression, and the problem is clearly fuel-related.

Buy Mower B (Inner Tubes) if:

  • Your mower, tractor, golf cart, or trailer has a slow leak or a puncture in a 20x8-8 or 20x10-8 tire.
  • You want a spare tube on hand for quick field repairs.
  • You need a simple, mechanical fix (no engine work) that works across multiple machines in your garage.

Buy Neither if:

  • Your Murray mower has a dead engine (no compression, broken rod), a bad transmission, or a severely rusted deck. A $28 carburetor won’t fix those. Similarly, if your tire sidewall is cracked or the rim is damaged, new inner tubes will not help.

Here is a head-to-head comparison of these two products. Please note that Mower A is a replacement carburetor (an engine part), while Mower B is a deck belt (a drive component). They are not complete lawn mowers, but rather repair parts for different machines. The comparison below treats them as the parts they are, not as complete riding mowers.

Quick Verdict

UDC Parts wins due to vastly higher buyer trust and proven reliability, backed by over 12,700 reviews, while the Murray carburetor has only 4 reviews and is a generic replacement part with limited track record.

Side-by-Side Comparison

Feature Mower A (Murray Carburetor) Mower B (UDC Deck Belt)
Price $28.26 $36.29
Power Source Gas (15.5 hp Briggs & Stratton engine) Mechanical (belt drive for zero-turn mower deck)
Cutting Width 42 inches (fits Murray riding mower) 60 inches (fits Bad Boy ZT Elite, Maverick)
Self-Propelled Yes (riding mower) No (belt only; mower is self-propelled separately)
Best Yard Size 0.5–2 acres (42" cut) 1–4 acres (60" cut)
Warranty Not specified (generic part) Not specified (UDC aftermarket part)

Where Murray Wins

  1. Lower price: At $28.26, the Murray carburetor is $8 cheaper than the UDC belt, making it a budget-friendly repair option for a 42-inch riding mower.
  2. Fuel system fix: If your Murray mower is surging, stalling, or won’t start due to a clogged carburetor, this is a direct, plug-and-play replacement that restores engine performance.
  3. Smaller yard suitability: Designed for a 42-inch cut deck, this carburetor is ideal for mowers used on smaller lawns (under 2 acres) where a compact, maneuverable machine is preferred.

Where UDC Wins

  1. Massive buyer confidence: With 12,730 reviews and a 4.3-star rating, the UDC belt has been tested by thousands of users. The Murray carburetor has only 4 reviews, offering almost no real-world validation.
  2. High durability: The UDC belt uses aramid cord construction, which is significantly stronger and longer-lasting than standard rubber or polyester belts, resisting stretching and snapping under heavy use.
  3. Wider application: This belt fits multiple Bad Boy zero-turn models (ZT Elite, Maverick, Avenger, Outlaw) with 54- or 60-inch decks, making it a versatile replacement for commercial-grade mowers used on larger properties.

Which Should You Buy?

Buy Mower A (Murray Carburetor) if:

  • You own a Murray riding mower with a 15.5 hp Briggs & Stratton engine that is experiencing fuel-related problems (hard starting, rough idle, stalling). This carburetor is a direct, low-cost fix.
  • You have a small to medium yard (under 2 acres) and want to restore a 42-inch mower without spending more than $30.
  • You are comfortable with basic engine repair and don’t need a part with thousands of reviews to trust it.

Buy Mower B (UDC Deck Belt) if:

  • You own a Bad Boy zero-turn mower (ZT Elite, Maverick, Avenger, Outlaw) and need a replacement deck belt for a 54- or 60-inch cutting deck. This is a proven, high-strength option.
  • You prioritize reliability and want a part with overwhelming positive feedback from over 12,700 buyers, indicating low failure rates and good fitment.
  • You mow large properties (1–4+ acres) and need a durable aramid-cord belt that can handle frequent, heavy use without premature wear.

Buy neither if:

  • You are looking for a complete lawn mower. Both items are replacement parts, not standalone machines.

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Last updated: June 2026