Mercury Quicksilver OEM Cowl Latch Lever Screw M6 x 30 | 40019130 | 10-40019130 | 6 8 9.9 15 HP Outboard
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Mercury Quicksilver OEM Cowl Latch Lever Screw M6 x 30 — Part 40019130
- Part Number: 40019130
- Full Catalog Number: 10-40019130
- Brand: Mercury Marine / Quicksilver (Genuine OEM)
- Official Product Type: Hardware & Fasteners — Cowling / Latch and Lever Screw
- System: Cowling — cowl latch and lever assembly
- Position: Cowl latch lever fastener — secures the latch lever, bushing, spacer, and wave washer in the lower-cowl latch assembly
- Thread Size: M6
- Length: 30 mm (approx. 1.18 in.)
- Quantity per Assembly: One screw per latch assembly (typical)
- GTIN / UPC: 745061142695
- Weight: approx. 0.01 kg
Length matters — compare with 40019131: Mercury used two similar M6 latch-and-lever screws in related cowling assemblies — the 30 mm 40019130 and the 35 mm 40019131. These are not interchangeable. Confirm the correct length from the serial-number-specific Mercury parts diagram for the exact cowl assembly before ordering.
What It Is
The 40019130 / 10-40019130 is the genuine OEM M6 x 30 mm latch and lever screw used in the cowl latch assembly on selected Mercury and Mariner small outboards. It secures the lower-cowl latch lever along with the bushing, spacer, and wave washer that form the latch pivot assembly. Mercury cowl diagrams identify 40019130 as the screw used across multiple small outboard cowling production ranges, including 6 HP and 8 HP engines in serial ranges 0A197112–0D280999 and other configurations through the 15 HP range and related Mariner variants.
Compatible Applications
Confirm fitment by exact Mercury or Mariner outboard serial number and the cowl latch diagram before ordering. Mercury used both 30 mm and 35 mm M6 latch screws in similar cowling assemblies on related outboard families.
- Mercury 6 HP — selected serial ranges including 0A197112–0D280999
- Mercury 8 HP — selected serial ranges including 0A197112–0D280999
- Mercury 9.9 HP
- Mercury 15 HP
- Mercury XR10
- Mercury Sea Pro 10
- Mariner 6 HP
- Mariner 9.9 HP
- Mariner 15 HP
- Mariner Magnum 10
- Mariner Marathon 10
Not sure it fits? Send us your Mercury or Mariner outboard serial number before ordering.
Related Latch Assembly Components
Mercury cowl diagrams show 40019130 installed with the following components in the latch assembly. These are sold separately:
Common early cowl latch assemblies (6 / 8 / 9.9 / 15 HP):
- 44461A1 — Cowl latch lever
- 76470 / 23-76470 — Cowl latch lever bushing
- 11394 — Latch spacer
- 69708 / 13-69708 — Wave washer
Selected later cowling designs (where 40019130 is still used as the M6 x 30 latch screw):
- 17220 — Cowl latch lever
- 816202 — Latch hook
- 37642 — Wave washer
- 812707 — Nylon bushing
- 17224 — Latch retaining nut
Related Fastener
- 40019131 / 10-40019131 — M6 x 35 mm latch and lever screw — used in similar Mercury cowling assemblies but a different length — not interchangeable with 40019130
Part Numbers
- 40019130 — Current Mercury Marine OEM part number
- 10-40019130 — Full Mercury / Quicksilver catalog number
No superseding Mercury part number is confirmed in current OEM references.
When to Replace
Replace the latch lever screw when:
- Threads are corroded, stripped, or damaged
- The screw head is rounded and can no longer be driven
- The latch lever develops excessive play from damaged or missing hardware
- The screw is bent, broken, or missing from the assembly
- The cowling latch assembly is being rebuilt and the original fastener is no longer serviceable
When replacing the screw, inspect the bushing (76470 or 812707), spacer (11394), and wave washer (69708 or 37642) at the same time — wear in those components can cause a loose or poorly operating latch even with a new screw installed.
Service Interval
No fixed service interval — replace on condition. Inspect the cowl latch hardware whenever the cowling is removed for service or the latch lever becomes loose, stiff, or difficult to operate. In saltwater and high-humidity environments, the M6 latch screw and surrounding hardware are prone to corrosion, so proactive inspection during annual maintenance can prevent a seized or broken latch screw from becoming a more involved repair at a less convenient time.
Installation Notes
- Confirm 40019130 (30 mm) is the correct latch screw for the serial-number-specific Mercury parts diagram — not the 35 mm 40019131
- Inspect the bushing, spacer, and wave washer for wear or corrosion before reassembling the latch lever
- Replace all worn latch assembly components at the same service — the entire latch pivot assembly must function together for the cowl to latch and release smoothly
- Torque to the specification in the applicable Mercury service manual for the cowl assembly
- After reassembly, test the cowl latch operation through several cycles to confirm smooth engagement and release before returning the outboard to service
Technical FAQ
Q: What is the difference between 40019130 and 40019131?
Both are genuine Mercury M6 latch and lever screws used in similar outboard cowling assemblies, but 40019130 is 30 mm long and 40019131 is 35 mm long. They are not interchangeable. The correct screw must be confirmed from the serial-number-specific Mercury parts diagram for the exact cowl assembly being serviced.
Q: Does 40019130 fit all Mercury 6–15 HP outboards?
It fits selected Mercury and Mariner 6, 8, 9.9, and 15 HP outboards where the cowl latch diagram specifies 40019130. Not all small Mercury outboards in this range use the same cowl latch hardware. Confirm the correct part by the outboard serial number and the specific latch diagram.
Q: My cowl latch feels loose — is replacing the screw enough?
Not always. The latch pivot assembly includes the bushing, spacer, and wave washer alongside the screw. If any of those components are worn or corroded, the latch will remain loose or poorly operating even with a new screw. Inspect all latch hardware together and replace any worn components at the same service.
Parts Desk Insights
The most important detail with 40019130 is the 30 mm length. Mercury used a nearly identical 35 mm screw (40019131) in related cowling assemblies on some of the same outboard families, and the two screws are easy to confuse by appearance. Ordering by the exact OEM part number rather than thread size alone is the correct approach. Also worth noting: when a customer reports a loose or rattling cowl latch, the screw alone is rarely the only worn component — the bushing and wave washer wear at similar rates and are worth adding to the order to avoid a repeat repair.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
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