---
product_id: 3154772
title: "Briggs & Stratton 31R907-0007-G1 500cc 17.5 Gross HP Engine with 1-Inch by 3-5/32-Inch Length Crankshaft Tapped 7-16-20-Inch"
brand: "briggs & stratton"
price: "1816307CFA"
currency: XOF
in_stock: true
reviews_count: 11
category: "Briggs & Stratton"
url: https://www.desertcart.sn/products/3154772-briggs-and-stratton-31r907-0007-g1-500cc-17-5-gross
store_origin: SN
region: Senegal
---

# 9 amp electric start 17.5 HP powerhouse Cast iron durability Briggs & Stratton 31R907-0007-G1 500cc 17.5 Gross HP Engine with 1-Inch by 3-5/32-Inch Length Crankshaft Tapped 7-16-20-Inch

**Brand:** briggs & stratton
**Price:** 1816307CFA
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your projects with precision and durability — don’t get left behind!

## Quick Answers

- **What is this?** Briggs & Stratton 31R907-0007-G1 500cc 17.5 Gross HP Engine with 1-Inch by 3-5/32-Inch Length Crankshaft Tapped 7-16-20-Inch by briggs & stratton
- **How much does it cost?** 1816307CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/3154772-briggs-and-stratton-31r907-0007-g1-500cc-17-5-gross)

## Best For

- briggs & stratton enthusiasts

## Why This Product

- Trusted briggs & stratton brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Dura-Bore cast iron cylinder sleeve ensures extended engine life and superior wear resistance.
- • **Effortless Ignition:** 9 amp electric start with maintenance-free Magnetron electronic ignition means instant, hassle-free startups every time.
- • **Cleaner, Longer Runs:** Dual Clean air filtration system protects your engine from dirt and debris, maximizing efficiency and longevity.
- • **Unmatched Power & Performance:** 17.5 Gross HP delivers reliable, heavy-duty torque for all your outdoor equipment needs.
- • **Ready for Compliance & Convenience:** CARB compliant and equipped with an installed muffler for quieter operation and environmental peace of mind.

## Overview

The Briggs & Stratton 31R907-0007-G1 is a robust 500cc single-cylinder engine delivering 17.5 gross horsepower. Featuring a cast iron cylinder sleeve, dual element air filter, and a 9 amp electric start system, it offers reliable, smooth performance with minimal maintenance. CARB compliant and backed by a solid warranty, this engine is engineered for longevity and ease of use, making it the go-to choice for professional-grade outdoor power equipment.

## Description

This genuine 500cc Briggs & Stratton single cylinder engine offers dependable power for your equipment needs. With a power rating of 17.5 horsepower, this engine features a premium Dual Clean air filtration system, electric starter, and maintenance-free Magnetron electronic ignition. With a manufacturer limited warranty of 2 years consumer use / 1 year commercial use, Briggs & Stratton provides power that you can trust. This engine includes a Dura-Bore cast iron cylinder sleeve for extended life. This engine includes an installed muffler. This engine includes a 9 amp charging system.

Review: REPLACE or REPAIR - I am a do-it yourselfer and have a 2017 Troy-Bilt Pony that originally had a Briggs & Stratton 17.5 Power Built Engine after 6+ years of use and just after replacing the 42" Deck completely, the compression relief valve decided to break preventing the engine to start. So, I was faced with attempting to make that engine repair, (internally) for a new compression relief valve part (priced at $200 for the kit only), plus my time and risk finding additional internal damage to other internal parts or replace the engine entirely. After looking at the cost at new riding lawn mowers, plus the fact I already replaced the deck I opted to replace the engine. This Briggs & Stratton 31R907-0007-G1 500cc 17.5 Gross HP Engine installation was easy, providing you take your time and review YouTube videos prior to starting the job. I suggest you pre-tap the mounting holes with a 3/8 x 16 tap in order to reuse the self-tapping mounting screws. I had to use a utility propane torch to break the hold loose on the crank. I removed / re-used my original exhaust. Engine removal was easy, take photos of fuel lines, linkage and wiring just in case. New engine lined up and bolted right up. Had to remove the new muffler (1/4" Allen). Wire harness took some study. In my case I swapped out the wire harness for the fuel solenoid with my old harness so that the gray and black wire from the fuel solenoid and the black wire from the ignition coil would easily connect to my original connector. I clipped and re-used the connector from the red and black wire from the stator alternator to connect to the voltage regulator, red wire to red wire from voltage regulator and attached the black wire to the black ground wire on the voltage regulator. Did not have to do anything with the yellow wire. Attached battery (hot - red) cable to starter. Added 44 oz. of Briggs & Stratton HD30 Oil to filler tube. I kept my old dip stick because I liked the yellow color cap. Turned the key and it fired right up. Hopped on any mulched the leaves. No adjustments to the carburetor or linkage were required. Took me overall 8 hours by myself, (cautiously). Glad I did it. If your mower is over 6+ years old and the deck and transmission are in good shape I recommend swapping the engine. I also recommend that you consider replacing the upper and lower transmission drive belts if needed. Also suggest you also take apart and clean the steering linkage / gears while the engine is off. Hope this review helps.
Review: So far so good - Ordered this engine as a replacement. I had a 15.5 Hp engine in my lawn mower before this one's a few more Hp. Install was pretty easy. Disconnect all the electrical. Take out the center bolt on pulley after taking your belts off. Slide the pulley off. There are four bolts holding the engine in place. These are self-tapping bolts. You do not need to tap the holes on the new engine. Pull off old engine, put new engine in place. Line up holes. Take manufacturer bolts. Put it into the hole with an impact gun and just have at it. The bolts are hardened steel & will cut into the soft metal. They do not need to be tapped beforehand. Make sure the key is either on the new engine or in the pulley slide that onto the new engine put bolt in. (At this time you need to add oil add minimum 1 quart) The connector or wires that went to your ignition solenoid from your old engine. Just hook up the wires from color. Mine were black and gray, I had to do some modification to the wires. Put waterproof crimps on the wires with heat shrink. Took the end off the yellow wire connected the yellow wire off the rectifier to the red wire coming from my engine harness. That's what powered my battery. Before installing the belts and hooking up the fuel, try just cranking the engine over a few times to get the oil splashing around through the engine. Then you can hook up the fuel and hook up your belts and start it up. (AT 5 HOURS OF RUN TIME NEED TO CHANGE OIL IN ENGINE SINCE IT DOES NOT HAVE A FILTER MANUFACTURER RECOMMENDS) After that you can change the oil once a year. Good mowing.

## Features

- Cast iron cylinder sleeve and dual element air filter for extended engine life
- Float carburetor for consistent, easy starting
- Patented linear balancing system provides smoother performance
- 9 amp/electric start only
- CARB Compliant

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00IUAYGP2 |
| Best Sellers Rank | #357,960 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #267 in Replacement Outdoor Power Tool Engines |
| Brand | Briggs & Stratton |
| Date First Available | February 27, 2014 |
| Global Trade Identification Number | 00047282017531 |
| Horsepower | 17.5 Horsepower |
| Is Discontinued By Manufacturer | No |
| Item Weight | 51 pounds |
| Item model number | 31R907-0007-G1 |
| Manufacturer | Briggs & Stratton |
| Material | Cast Iron |
| Model Name | Briggs and Stratton |
| Product Dimensions | 48"W x 48"H |
| Speed | 9.8 RPM |
| UPC | 047282017531 |
| Voltage | 5 Volts |

## Product Details

- **Brand:** Briggs & Stratton
- **Horsepower:** 17.5 Horsepower
- **Model Name:** Briggs and Stratton
- **Speed:** 9.8 RPM
- **Voltage:** 5 Volts

## Images

![Briggs & Stratton 31R907-0007-G1 500cc 17.5 Gross HP Engine with 1-Inch by 3-5/32-Inch Length Crankshaft Tapped 7-16-20-Inch - Image 1](https://m.media-amazon.com/images/I/81g8rTQEPqL.jpg)

## Questions & Answers

**Q: will this replace model 31f707 o112E1**
A: First check the bolt hole pattern. If that matches then check where the exhaust exits to make sure it is the same. Finally  check the charging circuit. There are two types, a dual circuit which is usually an older motor an a tri circuit which is a more recent type. This is critical as damage to the alternator and regulator can occur.

**Q: anyone have wiring for 31r7070033g1 to this motor?**
A: Have you found a wiring diagram?  If so, please post.  Mine has a grey and black wiring, but I don't know what it attaches to.  I'm replacing a 13 hp B&S that totally failed (cylinder exploded).  I can't get the new one to turn over yet.  I've had it for about 8 months, but just now had time and need to install.  Any thoughts?

**Q: Will this replace a Model # 31C707-0230-E1 in a Craftsman Tractor without any modifications?**
A: I swapped the same engine as yours and had to reuse my old muffler and needed to modify the alternator wiring to go from dual circuit to this 9 amp regulated. I searched for Briggs Stratton alternator repower guide pdf and purchased a 692306 wiring harness to make the swap easier.

**Q: replacing CV14 kohler engine - muffler vents to back, muffler too big. will not allow mower stand/bagger won't work.. how to use /get side muffler?**
A: Ours had a side muffler.  I cut the side of the cowling to allow exhaust to escape.

## Customer Reviews

### ⭐⭐⭐⭐⭐ REPLACE or REPAIR
*by M***E on November 26, 2023*

I am a do-it yourselfer and have a 2017 Troy-Bilt Pony that originally had a Briggs & Stratton 17.5 Power Built Engine after 6+ years of use and just after replacing the 42" Deck completely, the compression relief valve decided to break preventing the engine to start. So, I was faced with attempting to make that engine repair, (internally) for a new compression relief valve part (priced at $200 for the kit only), plus my time and risk finding additional internal damage to other internal parts or replace the engine entirely. After looking at the cost at new riding lawn mowers, plus the fact I already replaced the deck I opted to replace the engine. This Briggs & Stratton 31R907-0007-G1 500cc 17.5 Gross HP Engine installation was easy, providing you take your time and review YouTube videos prior to starting the job. I suggest you pre-tap the mounting holes with a 3/8 x 16 tap in order to reuse the self-tapping mounting screws. I had to use a utility propane torch to break the hold loose on the crank. I removed / re-used my original exhaust. Engine removal was easy, take photos of fuel lines, linkage and wiring just in case. New engine lined up and bolted right up. Had to remove the new muffler (1/4" Allen). Wire harness took some study. In my case I swapped out the wire harness for the fuel solenoid with my old harness so that the gray and black wire from the fuel solenoid and the black wire from the ignition coil would easily connect to my original connector. I clipped and re-used the connector from the red and black wire from the stator alternator to connect to the voltage regulator, red wire to red wire from voltage regulator and attached the black wire to the black ground wire on the voltage regulator. Did not have to do anything with the yellow wire. Attached battery (hot - red) cable to starter. Added 44 oz. of Briggs & Stratton HD30 Oil to filler tube. I kept my old dip stick because I liked the yellow color cap. Turned the key and it fired right up. Hopped on any mulched the leaves. No adjustments to the carburetor or linkage were required. Took me overall 8 hours by myself, (cautiously). Glad I did it. If your mower is over 6+ years old and the deck and transmission are in good shape I recommend swapping the engine. I also recommend that you consider replacing the upper and lower transmission drive belts if needed. Also suggest you also take apart and clean the steering linkage / gears while the engine is off. Hope this review helps.

### ⭐⭐⭐⭐⭐ So far so good
*by B***N on May 18, 2025*

Ordered this engine as a replacement. I had a 15.5 Hp engine in my lawn mower before this one's a few more Hp. Install was pretty easy. Disconnect all the electrical. Take out the center bolt on pulley after taking your belts off. Slide the pulley off. There are four bolts holding the engine in place. These are self-tapping bolts. You do not need to tap the holes on the new engine. Pull off old engine, put new engine in place. Line up holes. Take manufacturer bolts. Put it into the hole with an impact gun and just have at it. The bolts are hardened steel & will cut into the soft metal. They do not need to be tapped beforehand. Make sure the key is either on the new engine or in the pulley slide that onto the new engine put bolt in. (At this time you need to add oil add minimum 1 quart) The connector or wires that went to your ignition solenoid from your old engine. Just hook up the wires from color. Mine were black and gray, I had to do some modification to the wires. Put waterproof crimps on the wires with heat shrink. Took the end off the yellow wire connected the yellow wire off the rectifier to the red wire coming from my engine harness. That's what powered my battery. Before installing the belts and hooking up the fuel, try just cranking the engine over a few times to get the oil splashing around through the engine. Then you can hook up the fuel and hook up your belts and start it up. (AT 5 HOURS OF RUN TIME NEED TO CHANGE OIL IN ENGINE SINCE IT DOES NOT HAVE A FILTER MANUFACTURER RECOMMENDS) After that you can change the oil once a year. Good mowing.

### ⭐⭐⭐⭐⭐ Perfect replacement
*by K***. on June 27, 2025*

Good buy, all bolt holes lined up perfectly for my Re210 Snapper. Throttle cables, exhaust and electrical connections were exactly where they were supposed to be. Direct replacement, worked like a dream. Expensive, but worth it so far. My first engine lasted 10 years with heavy usage.

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-03-05*