4 PCS Engine Cover Bolts 90105-TBA-A00 for Honda/Acura by AUTOMAJOR | M6 lower engine cover bolts. Fits Civic CR-V Accord Insight HR-V Integra ADX. Splash shield skid plate

A clean, focused four-pack of the exact M6 Phillips bolt that secures the front edge of the lower engine cover on Honda Civic, Honda CR-V, late-model Honda Accord, Honda HR-V, Honda Insight, Acura Integra, and Acura ADX. Each bolt matches Honda OEM 90105-TBA-A00 in thread pitch, length, head diameter, shoulder, and drive style, so it threads into the factory U-nut without any modification. This SKU is engineered for one specific job: replacing the two front bolts on the engine under-cover when one or both have gone missing. Buy a four-pack and you get one set for now and one spare set in the toolbox for the next oil change. No pin retainers, no clips, no parts you do not need. Why these bolts go missing: the two M6 fasteners at the front of the lower engine cover are the only fully-threaded hardware on the whole panel, and they back themselves out on rough pavement once they have been removed and re-installed a few times. Symptoms include a metallic flapping at 50 mph, a scraping noise on speed bumps, the front of the splash shield drooping below the bumper line, and oil change stickers in the passenger door jamb that do not match the bolt count under the car. What you receive: four pieces of zinc-plated alloy steel bolt, M6 by 1.0 mm thread, 15 mm shank length, 18 mm head diameter, 10 mm shoulder diameter, 2.5 mm shoulder length, Phillips 3 drive — every dimension matching OEM 90105-TBA-A00. Recommended torque is 9 N·m per factory specification for M6 hardware. Vehicle fitment: Honda Civic 2016-2024 sedan, coupe, hatchback, Si, Sport, Touring, Type R with 1.5L turbo L15B7 and 2.0L K20C engines; Honda CR-V 2017-2024 LX, EX, EX-L, Touring and Hybrid; Honda Accord 2023-2024 eleventh generation; Honda HR-V 2023-2024; Honda Insight 2019-2022; Honda Prelude 2026; Acura Integra 2023-2026; Acura ADX 2025. Note: 2014-2017 Honda Accord ninth generation and 2018-2022 Honda Accord tenth generation use a different bolt — verify your year before ordering for an Accord older than 2023. Install steps: 1) align the lower cover to the front sub-frame; 2) start each bolt by hand for two full turns to confirm the thread is engaging the U-nut; 3) tighten with a JIS or Phillips 3 bit to 9 N·m; 4) optional drop of medium-strength thread locker if the bolts have a history of backing out.

• Exact OEM match for 90105-TBA-A00 in a focused four pack. The single M6 Phillips bolt that holds the front of the lower engine cover, sold in the quantity DIY owners actually need: two for the car right now and two spares for the next oil change. No pins, no clips, no fluff. Replaces under-cover bolt, front shield bolt, radiator support splash shield bolt, and bolt cover lower under multiple Honda and Acura naming conventions.
• The most common reason a skid plate drags. The two M6 bolts at the front of the engine cover are the only fully-threaded hardware on the panel, and they are the first to go missing after a quick-lube oil change or the first to vibrate out on rough pavement. Symptoms include a metallic flapping at highway speed, a scraping sound on speed bumps, the front of the splash shield drooping below the bumper line, and a cover that sits crooked.
• True OEM specs in zinc plated alloy steel. Thread M6 by 1.0 mm, length 15 mm, head diameter 18 mm, shoulder diameter 10 mm, shoulder length 2.5 mm, Phillips 3 drive, zinc plated finish for road salt resistance — every dimension matching OEM 90105-TBA-A00. Recommended factory torque is 9 N·m for M6 fasteners. The 2.5 mm shoulder matches the 3.0 mm sheet metal flange so the head seats flush without crushing the cover.
• Verified fitment across the modern Honda and Acura catalog. Honda Civic 2016-2024, Honda CR-V 2017-2024, Honda Accord 2023-2024 eleventh generation, Honda HR-V 2023-2024, Honda Insight 2019-2022, Honda Prelude 2026, Acura Integra 2023-2026, Acura ADX 2025. Note: older Honda Accord 2014-2022 uses a different OEM bolt — verify your year before ordering for those Accord generations.
• Five minute install with common tools. Raise the vehicle on jack stands or ramps, align the lower cover, start each bolt by hand for two turns to confirm the thread, then tighten with a JIS or Phillips 3 bit to 9 N·m. Apply a drop of medium-strength thread locker on cars where the bolts have backed out before. The four pack lets you keep a spare set in the glove box for the next oil change.