The 30-piece Coil Cover Fastener Bolt Kit from Buckshot Racing #77 is a complete replacement hardware set for Mercury and Mariner high-performance V-6 outboards using factory coil/ignition covers.
This kit is engineered to replace aging or corroded Mercury coil cover screws, washers and ground strap screws with stainless socket head hardware that improves serviceability, strength, and appearance on race and performance engines.
Each kit includes twelve (12) stainless socket head cap screws for the ignition/coil covers, six (6) stainless socket head cap screws dedicated to the ground straps, and twelve (12) stainless steel washers. The components are designed to fit and properly clamp stock plastic or metal coil covers on Mercury’s 9-amp and 16-amp ignition systems.
Merc OEM Cross Reference
This coil cover bolt kit is a direct stainless replacement for Mercury / Mercruiser / Quicksilver hardware, specifically:
Coil Cover Screw – Mercury OEM part number 10-88447
Ground Strap Screw – Mercury OEM part number 10-68513
Purchased individually as factory parts, these screws can add up quickly, often exceeding an MSRP of $137.56 when bought piece by piece through Mercury or Quicksilver channels. The Buckshot Racing #77 kit packages all required coil cover and ground strap fasteners into a single, high-value kit, making it a cost-effective alternative to OEM Mercury coil cover screw sets while still matching the critical dimensions and thread pitch.
Stainless Socket Head vs. OEM Cap Screws
The stainless-steel socket head cap screws in this kit are designed as a functional upgrade over the original Mercury cap screws used on coil covers and ground straps. The internal hex (Allen) drive provides better tool engagement in tight spaces.
The more compact head profile and precise washer interface provide consistent clamp load on the coil covers and ground straps, which is especially important on high-RPM Mercury Racing engines where vibration and harmonics are severe.
Stainless construction greatly improves corrosion resistance in both freshwater and saltwater environments, helping prevent seized or rusted coil cover screws that can complicate service work on ignition components.
From a visual standpoint, the stainless hardware gives the coil plate and ignition area a clean, professional appearance—ideal for precision builds, drag racing engines, Mod VP rigs, and restored high-performance Mercury outboards where engine detail matters.
Fitment – Mercury High Performance 9-Amp & 16-Amp Race Ignition
This coil cover fastener configuration is used on factory-produced 9-amp and 16-amp Mercury Race High-Performance Division outboards. Typical applications include many of the most sought-after Mercury and Mercury Racing V-6 models, such as:
- All 2.0L and 2.4L V-6 outboards (1976 through 1990)
200 Pro Max and 225 Pro Max
SST-120 and SST-140 tunnel race outboards
F1, S3000, and other full-race Mercury V-6 engines
Mod VP, 245 HP Carb, 260 ROS EFI, and 300 Drag motors
If your service manual or parts diagram calls out 10-88447 for the coil cover screw and 10-68513 for the ground strap screw, this 30-piece Mercury coil cover bolt kit from Buckshot Racing #77 is designed as a direct replacement for the 3 x 2 Coils Mount Covers, but will NOT fit the 2 x 3 Coils Mount Covers found on 40 AMP systems.
Lock Tight is recommend on the threads of new bolts for this application.
Contact Mike Hill with any questions at +1-714-697-1716 or mike@buckshotracing77.com