---
title: "[Voltage Regulator](https://www.napaonline.com/en/shop/replacement-parts/lighting-electrical/diodes-regulators-reducers-resistors-transistors/voltage-regulator/526641726)"
url: https://www.napaonline.com/en/p/BK_S43247
description: Buy Voltage Regulator - BK S43247 online from NAPA Auto Parts Stores. Get deals on automotive parts, truck parts and more.
date: 2025-09-15
---

# [Voltage Regulator](https://www.napaonline.com/en/shop/replacement-parts/lighting-electrical/diodes-regulators-reducers-resistors-transistors/voltage-regulator/526641726)

## Features & Benefits
Warranty: Standard: 90 Days

- 12 Volt, 4 Terminal
- Ensures stable voltage output for optimal engine performance
- Durable construction withstands harsh automotive environments
- A 4 Terminal design simplifies connections and enhances reliability
- Protects electrical components from voltage spikes and fluctuations
- Backed by the Sparex brand

## Specifications

|  |  |
| --- | --- |
| Brand | Sparex |
| Contents | (1) Regulator |
| Manufacturer | Sparex |
| Manufacturer Part Number | S.43247 |
| VMRS Code | 031002001 |
| SDS Required | No |

## Vehicle Fitment Guide

| Make                      | Model                | Year(s)               |
|---------------------------|---------------------|-----------------------|
| Allis Chalmers Tractor    | D17                 | 1957 -1962            |
| Allis Chalmers Tractor    | D10                 | 1960 -1963            |
| Allis Chalmers Tractor    | D10                 | 1965 -1967            |
| Allis Chalmers Tractor    | D12                 | 1961 -1962            |
| Allis Chalmers Tractor    | D12                 | 1965 -1966            |
| Allis Chalmers Tractor    | D14                 | 1957 -1960            |
| Allis Chalmers Tractor    | D15                 | 1960 -1960            |
| Allis Chalmers Tractor    | D15                 | 1962 -1962            |
| Allis Chalmers Tractor    | D19                 | 1961 -1961            |
| Ferguson Tractor           | TO35 Standard       | 1954 -1954            |
| Ferguson Tractor           | TO35 Standard       | 1956 -1956            |
| Ferguson Tractor           | TO35 Deluxe         | 1954 -1957            |
| Ferguson Tractor           | F40                 | 1956 -1957            |
| I.H. Farmall Tractor       | 140                 | 1958 -1981            |
| I.H. Farmall Tractor       | 560                 | 1958 -1963            |
| I.H. Farmall Tractor       | Cub                 | 1947 -1979            |
| I.H. Farmall Tractor       | Cub Low Boy         | 1955 -1968            |
| I.H. Farmall Tractor       | 460                 | 1958 -1963            |
| I.H. Farmall Tractor       | Cub 154 Low Boy     | 1968 -1968            |
| I.H. Farmall Tractor       | Cub 154 Low Boy     | 1971 -1974            |
| John Deere Tractor          | 1010                | 1960 -1965            |
| John Deere Tractor          | 2010                | 1960 -1963            |
| Massey Ferguson Tractor     | MF-175              | 1964 -1972            |
| Massey Ferguson Tractor     | MF-175              | 1974 -1974            |
| Massey Ferguson Tractor     | MF-180              | 1964 -1974            |
| Massey Ferguson Tractor     | MF-85               | 1958 -1962            |
| Massey Ferguson Tractor     | MF-85               | 1965 -1965            |
| Massey Ferguson Tractor     | MF-50               | 1958 -1964            |
| Massey Ferguson Tractor     | MF-65               | 1958 -1964            |
| Massey Ferguson Tractor     | MF-150              | 1964 -1964            |
| Massey Ferguson Tractor     | MF-150              | 1966 -1967            |
| Massey Ferguson Tractor     | MF-150              | 1969 -1969            |
| Massey Ferguson Tractor     | MF-150              | 1972 -1974            |
| Massey Ferguson Tractor     | MF-165              | 1965 -1967            |
| Massey Ferguson Tractor     | MF-165              | 1969 -1971            |
| Massey Ferguson Tractor     | MF-165              | 1973 -1974            |
| Massey Ferguson Tractor     | MF-88               | 1959 -1962            |
| Massey Ferguson Tractor     | MF-135              | 1964 -1974            |
| Massey Ferguson Tractor     | MF-35               | 1961 -1961            |
| Massey Harris Tractor       | MH-50               | 1955 -1956            |
| Oliver Tractor              | 770                 | 1958 -1967            |
| Oliver Tractor              | 550                 | 1958 -1975            |
| Oliver Tractor              | 880                 | 1958 -1963            |
| Oliver Tractor              | 1800                | 1960 -1963            |
| Oliver Tractor              | 1900                | 1960 -1963            |

## Safety Information
- [California Prop 65 - WARNING: Cancer and Reproductive Harm - www.p65Warnings.ca.gov/product.](https://assets.genpt.com/pdf/id/234408864) - WARNING: Cancer and Reproductive Harm - www.p65Warnings.ca.gov/product.