| Document and Entity Information | Feb. 18, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Feb. 18, 2021 |
| Entity Registrant Name | STANDARD MOTOR PRODUCTS, INC. |
| Entity Incorporation, State or Country Code | NY |
| Entity File Number | 001-04743 |
| Entity Tax Identification Number | 11-1362020 |
| Entity Address, Address Line One | 37-18 Northern Boulevard |
| Entity Address, City or Town | Long Island City |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 11101 |
| City Area Code | 718 |
| Local Phone Number | 392-0200 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0000093389 |
| Title of 12(b) Security | Common Stock, par value $2.00 per share |
| Trading Symbol | SMP |
| Security Exchange Name | NYSE |
