{"id":16948,"date":"2026-07-22T13:29:09","date_gmt":"2026-07-22T11:29:09","guid":{"rendered":"http:\/\/www.stolkcarparts.com\/?post_type=product&p=16948"},"modified":"2026-09-15T11:19:28","modified_gmt":"2026-09-15T09:19:28","slug":"spark-plug-ngk-mercedes-m114-m115","status":"publish","type":"product","link":"https:\/\/www.stolkcarparts.com\/en\/product\/bougie-ngk-mercedes-m114-m115\/","title":{"rendered":"Spark plug NGK \u2013 Mercedes M114 M115 M116 M121 M130"},"content":{"rendered":"

Spark plug \u2013 affordable alternative \u2013 Mercedes M114 M115 M116 M121 M130<\/strong><\/p>\n

This spark plug is a high-quality and affordable replacement for the original Mercedes spark plugs with OEM numbers A0031591303 \/ 0031591303 and A0031594203 \/ 0031594203. The spark plug is equivalent to Bosch WR6DC (0 242 240 592) and ensures reliable ignition, smooth engine operation, and optimal combustion.<\/p>\n

Suitable for Mercedes models<\/strong><\/p>\n

\u2022 Mercedes W114 250 (114.010)
\n\u2022 Mercedes W114 250 C (114.021)
\n\u2022 Mercedes W114 250 CE (114.022)<\/p>\n

\u2022 Mercedes W460 G-Class 230 G
\n\u2022 Mercedes W460 G-Class Cabriolet 230 G<\/p>\n

\u2022 Mercedes W109 300 SEL (109.016)
\n\u2022 Mercedes W109 300 SEL 3.5 (109.056)<\/p>\n

\u2022 Mercedes W121 190 SL (121.040 \/ 121.042)<\/p>\n

Suitable for Mercedes engines<\/strong><\/p>\n

\u2022 M114
\n\u2022 M115
\n\u2022 M116
\n\u2022 M121
\n\u2022 M130<\/p>\n

OEM references<\/strong><\/p>\n

Mercedes<\/strong><\/p>\n

\u2022 A0031591303
\n\u2022 0031591303
\n\u2022 A0031594203
\n\u2022 0031594203<\/p>\n

Bosch<\/strong><\/p>\n

\u2022 WR6DC
\n\u2022 0 242 240 592<\/p>\n

Specifications<\/strong><\/p>\n

    \n
  1. Part: spark plug.<\/li>\n
  2. Affordable alternative to the original Mercedes spark plug.<\/li>\n
  3. Bosch equivalent: WR6DC \/ 0 242 240 592.<\/li>\n
  4. Suitable for M114, M115, M116, M121, and M130 engines.<\/li>\n
  5. Ensures reliable ignition, smooth engine operation, and optimal combustion.<\/li>\n
  6. Suitable for the Mercedes models mentioned above.<\/li>\n<\/ol>\n

    Important<\/strong><\/p>\n

    Always check new spark plugs for transport damage before installation. Dented packaging may indicate that the ceramic insulator part has sustained a hairline crack. Damaged ceramic can come loose during use and cause serious engine damage.<\/p>\n

    Always check the prescribed electrode gap before installation. Even new spark plugs may have a deviating electrode gap during transport or storage. If necessary, carefully adjust the gap according to Mercedes factory specifications.<\/p>\n

    We recommend replacing spark plugs preventively every 8 years or 30,000 kilometers<\/strong> to replace, depending on which is reached first. Even in vehicles that are driven infrequently, the electrodes and insulation material can deteriorate due to aging, which can lead to a weaker spark, rough engine operation, higher fuel consumption, and reduced cold starting.<\/p>\n

    For optimal performance, we recommend always replacing spark plugs as a complete engine set. Simultaneously check the condition of the spark plug wires, distributor cap, and distributor rotor to prevent voltage loss and ignition malfunctions.<\/p>\n

    Always check before purchase and installation whether the part is suitable and equivalent based on photos, description, and specifications; installed or used parts cannot be returned.<\/p>","protected":false},"excerpt":{"rendered":"

    Spark plug NGK \u2013 Mercedes M114 M115 M116 M121 M130\u00a0\u00a0<\/strong><\/p>","protected":false},"featured_media":17369,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false,"rs_blank_template":"","rs_page_bg_color":"","slide_template_v7":""},"product_cat":[1236,2272],"product_tag":[1668,1693,1694,1716,1978,1695,1628,1952,1610,1601,1613,1589],"vehicles":[],"class_list":["post-16948","product","type-product","status-publish","has-post-thumbnail","product_cat-elektrisch-ontsteking-m116-8-cilinder-smallblock-350-w108-109","product_cat-mercedes-motoronderdelen","product_tag-bougie","product_tag-m114","product_tag-m115","product_tag-m116","product_tag-m121","product_tag-m130","product_tag-mercedes","product_tag-ngk","product_tag-w109","product_tag-w114","product_tag-w121","product_tag-w460","first","instock","taxable","shipping-taxable","purchasable","product-type-simple","add-to-wishlist-after_add_to_cart"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.stolkcarparts.com\/en\/wp-json\/wp\/v2\/product\/16948","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.stolkcarparts.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.stolkcarparts.com\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.stolkcarparts.com\/en\/wp-json\/wp\/v2\/comments?post=16948"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.stolkcarparts.com\/en\/wp-json\/wp\/v2\/media\/17369"}],"wp:attachment":[{"href":"https:\/\/www.stolkcarparts.com\/en\/wp-json\/wp\/v2\/media?parent=16948"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.stolkcarparts.com\/en\/wp-json\/wp\/v2\/product_cat?post=16948"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.stolkcarparts.com\/en\/wp-json\/wp\/v2\/product_tag?post=16948"},{"taxonomy":"vehicles","embeddable":true,"href":"https:\/\/www.stolkcarparts.com\/en\/wp-json\/wp\/v2\/vehicles?post=16948"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}