Buick Heavy-Duty Spark Plugs

Brand: Buick | Part #ENG-4E31A6

Category: Engine Parts > Spark Plugs

The Buick Heavy-Duty Spark Plugs (P/N ENG-4E31A6) is a direct-fit Spark Plugs for the vehicles listed in the fitment section. Machined to OE surface finish and bolt-pattern tolerances so torque sequences and gasket sealing behave exactly as the service manual expects. Sourced from Buick, a recognized supplier in the aftermarket auto parts channel. Part number ENG-4E31A6 is the manufacturer reference — match it against your old part or VIN-based lookup to confirm you have the right unit. Confirmed fitment on 2020–2024 Buick including Encore, Encore GX, Envision, Enclave. Use the year/make/model selector above to verify your exact configuration before checkout. Ships from a US warehouse in 1–2 business days. Free shipping on orders $75+, flat-rate ground otherwise. Backed by a 90-day return window — if the part doesn't fit or the wrong unit was shipped, send it back for a full refund.

Price: $58.99 | In stock — ships within 1-2 business days. Free shipping on orders over $75.