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Cloyes S1125 Engine Timing Crankshaft Sprocket - Inner
| Brand | Cloyes S1125 |
|---|---|
| Position | Inner |
| Material | Metal |
| Inside Diameter | 1.182 |
| Inside Diameter | 30.0228 |
| Outside Diameter | 2.494 |
| Outside Diameter | 63.3476 |
| Tooth Quantity | 25 |
| Chain Row Quantity | 1 |
| Chain Type | Roller |
| Keyway Notch | Yes |
| Mounting Hole Diameter (uom:in) | 1.182 |
| Mounting Hole Diameter (uom:mm) | 30.0228 |
| Mounting Hole Quantity | 1 |
| Timing Mark Quantity | 1 |
| Tooth Width (uom:in) | 0.162 |
| Tooth Width (uom:mm) | 4.1148 |
| Width (uom:in) | 0.678 |
| Width (uom:mm) | 17.2212 |
| Product line | Timing Crankshaft Sprocket |
| Fits | Mazda · 27 vehicles |
Precision-tooled design. Exact tooth geometry and a matched bore help deliver reliable timing.
Metal construction. Built for strength and long-term performance in the timing system.
Timing system component. Works with the chain, tensioners, and guides to maintain precise timing.
Cross-references Cloyes S1125, PE0111314 and PE0211314 for the same application. See all 4.
Cloyes S1125 Timing Crankshaft Sprocket
The Cloyes S1125 timing crankshaft sprocket is a precision engine timing component built for exact tooth geometry, bore alignment, offset, and timing index. It works with the timing chain, tensioners, guides, and related sprockets to maintain accurate valve timing in supported Mazda applications.
For drivers and technicians servicing a Mazda CX-3, Mazda MX-5, Mazda MX-5 Miata, Mazda 3, or Mazda CX-5, this inner timing crankshaft sprocket is engineered for consistent fit and dependable timing system operation. Cloyes timing components are developed for professional engine service where accuracy matters.
Key Features
- Part number: S1125
- Engine timing crankshaft sprocket for the inner position
- Metal construction for durability in timing system service
- 25-tooth, single-row roller chain design
- Keyway notch and one timing mark for indexed installation
- Precision-tooled bore, offset, and tooth profile for proper timing alignment
- Outside diameter: 2.494 in. (63.3476 mm)
- Inside diameter / mounting hole diameter: 1.182 in. (30.0228 mm)
- Width: 0.678 in. (17.2212 mm)
- Tooth width: 0.162 in. (4.1148 mm)
Detailed Description
Cloyes has focused on automotive timing systems since 1921, and the S1125 reflects that experience in a crankshaft sprocket made for precise engine synchronization. This component is designed to work in step with the timing chain and related hardware so the crankshaft and camshaft timing relationship stays accurate during operation. It is a direct-fit timing crankshaft sprocket for supported Mazda engines, including Mazda CX-3, Mazda MX-5, Mazda MX-5 Miata, Mazda 3, and Mazda CX-5 applications.
This part cross-references PE0111314 and PE0211314 for the same application. The Cloyes S1125 is a practical choice when replacing timing system wear items during engine service, especially when the original sprocket shows wear at the teeth, bore, or timing index.
What It Helps Address
- Timing chain slip caused by worn sprocket teeth
- Incorrect camshaft-to-crankshaft timing alignment
- Noise or irregular operation from timing system wear
- Fitment issues from a damaged keyway or mounting bore
- Service concerns during timing chain replacement on Mazda CX-3, Mazda MX-5, Mazda MX-5 Miata, Mazda 3, and Mazda CX-5 engines
Installation Notes and Tips
Verify engine code and timing marks before installation. Cloyes recommends replacing the chain, tensioners, guides, and sprockets together during timing service to maintain timing system integrity. Confirm the inner position and match the sprocket to the vehicle application before final assembly.
Quality Assurance
Cloyes timing components are built with exacting tooth geometry and matched dimensions for reliable engine timing performance. The brand backs its timing products with technical support and an industry-leading warranty.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2020 | Mazda | CX-3 | 2.0L | L4 | Inner | Timing Crankshaft Sprocket |
| 2020 | Mazda | MX-5 | 2.0L | L4 | Inner | Timing Crankshaft Sprocket |
| 2020 | Mazda | MX-5 Miata | 2.0L | L4 | Inner | Timing Crankshaft Sprocket |
| 2019 | Mazda | CX-3 | 2.0L | L4 | Inner | Timing Crankshaft Sprocket |
| 2019 | Mazda | MX-5 | 2.0L | L4 | Inner | Timing Crankshaft Sprocket |
| 2019 | Mazda | MX-5 Miata | 2.0L | L4 | Inner | Timing Crankshaft Sprocket |
| 2018 | Mazda | 3 | 2.0L | L4 | Inner | Timing Crankshaft Sprocket |
| 2018 | Mazda | CX-3 | 2.0L | L4 | Inner | Timing Crankshaft Sprocket |
| 2018 | Mazda | MX-5 | 2.0L | L4 | Inner | Timing Crankshaft Sprocket |
| 2018 | Mazda | MX-5 Miata | 2.0L | L4 | Inner | Timing Crankshaft Sprocket |
| 2017 | Mazda | 3 | 2.0L | L4 | Inner | Timing Crankshaft Sprocket |
| 2017 | Mazda | CX-3 | 2.0L | L4 | Inner | Timing Crankshaft Sprocket |
| 2017 | Mazda | CX-5 | 2.0L | L4 | Inner | Timing Crankshaft Sprocket |
| 2017 | Mazda | MX-5 | 2.0L | L4 | Inner | Timing Crankshaft Sprocket |
| 2017 | Mazda | MX-5 Miata | 2.0L | L4 | Inner | Timing Crankshaft Sprocket |
| 2016 | Mazda | 3 | 2.0L | L4 | Inner | Timing Crankshaft Sprocket |
| 2016 | Mazda | CX-3 | 2.0L | L4 | Inner | Timing Crankshaft Sprocket |
| 2016 | Mazda | CX-5 | 2.0L | L4 | Inner | Timing Crankshaft Sprocket |
| 2016 | Mazda | MX-5 | 2.0L | L4 | Inner | Timing Crankshaft Sprocket |
| 2016 | Mazda | MX-5 Miata | 2.0L | L4 | Inner | Timing Crankshaft Sprocket |
| 2015 | Mazda | 3 | 2.0L | L4 | Inner | Timing Crankshaft Sprocket |
| 2015 | Mazda | CX-5 | 2.0L | L4 | Inner | Timing Crankshaft Sprocket |
| 2014 | Mazda | 3 | 2.0L | L4 | Inner | Timing Crankshaft Sprocket |
| 2014 | Mazda | CX-5 | 2.0L | L4 | Inner | Timing Crankshaft Sprocket |
| 2013 | Mazda | 3 | 2.0L | L4 | Inner | Timing Crankshaft Sprocket |
| 2013 | Mazda | CX-5 | 2.0L | L4 | Inner | Timing Crankshaft Sprocket |
| 2012 | Mazda | 3 | 2.0L | L4 | Inner | Timing Crankshaft Sprocket |
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