The right lawn mower engine cover screws are essential for keeping your mower’s protective shroud firmly in place, preventing debris, moisture, and damage from reaching the engine.
Whether you need a replacement for lost or worn-out screws, or an upgrade to more durable hardware, choosing high-quality screws ensures a secure fit and long-lasting protection.
In this guide, we’ve reviewed the 5 best lawn mower engine cover screws of 2025, covering options from universal replacements to genuine OEM parts.
From rust-resistant stainless steel to zinc-plated, case-hardened designs, these screws offer strength, easy installation, and compatibility with popular mower brands, helping you maintain peak engine performance.
1. Hip Together Lawnmower Screw
The Hip Together Lawnmower Screw is a non-OEM replacement designed for securely attaching plastic shrouds to metal frames, commonly on lawnmowers.
This 1/4″-15 x 3/4″ screw features a high-low thread design to prevent plastic damage and is made of zinc-plated, case-hardened steel to resist oxidation. It’s a self-tapping hex washer-head screw also suitable for snowblowers, go-carts, and washing machines.
Best for: Replacing hard-to-find or missing screws in lawnmowers and other equipment.
Pros:
- Perfect replacement for original and OEM screws.
- More affordable than OEM screws.
- High-low threads ensure secure attachment without damaging plastic.
- Durable due to case-hardened steel and zinc plating.
- Versatile, usable in lawnmowers, snowblowers, go-carts, and washing machines.
- Fits specific models like Ryobi battery-powered and Cub Cadet LTX1046 lawnmowers.
- Available in various package sizes.
Cons:
- One customer reported they were too large in SAE diameter and damaged axle brackets.
- May be slightly shorter than some original screws.
- Image may not be available for all colors.
- Certain enhancements might not be available depending on the seller or quantity.
2. ZLKSKER 2 Sets Lawn Mower Handle Knobs Nut Bolt
The ZLKSKER 2 Sets Lawn Mower Handle Knobs Nut Bolt are triangular fastening screws crafted from durable hard plastic and galvanized iron, ensuring they are sturdy and rust-free.
Designed for easy manual installation without a wrench, this set includes two units. With a 7.74mm bolt diameter, it serves as a replacement for Honda and various other lawn mower handles and machines.
Best for: Replacing and securely fastening lawn mower handles on a variety of brands.
Pros:
- Sturdy and durable, made of rust-free materials.
- Easy manual installation without requiring a wrench.
- Provides a good fit for many lawn mower brands, including Greenworks, Toro, Ryobi, Briggs & Stratton, and Honda.
- Generally considered well-made and of good quality.
- Offers excellent value for money.
- Often described as a perfect replacement for original parts.
Cons:
- Some customers report issues with the knob’s tightness, noting it may not secure properly or loosen due to vibration.
- There are isolated reports of the product being brittle or breaking.
- May not be compatible with all specific lawn mower models.
- The screws can be too long for certain applications.
3. Vomika Lower Engine Cover Pin Screws
The Vomika Lower Engine Cover Pin Screws are a 14-piece set of premium metal bolts and clips for radiator access and splash shield.
Designed for Honda Civic, Accord, CRV, and Acura models (2014-2020), these durable, easy-to-install parts ensure superior performance and a flawless fit, replacing original components.
Best for: Replacing missing or damaged lower engine cover and splash shield hardware in compatible Honda and Acura vehicles.
Pros:
- Crafted from durable, high-quality metal ensuring stability and strength.
- Easy to install with a user-friendly design.
- Wide compatibility with specific Honda and Acura models including Accord, CRV, Civic, ILX, RLX, and TLX.
- Customers report a perfect fit, often indistinguishable from OEM parts.
- Offers good value for money and is less costly than dealer parts.
- Serves as an effective and reliable replacement for original components.
- Available with secure transactions and free return options.
- Qualifies for fast, free delivery for Prime members or orders over $35 shipped by Amazon.
Cons:
- One customer noted needing a third bolt screw, suggesting the included quantity may not cover all repair needs.
- The material may be softer than original equipment, potentially leading to stripping.
- Contains small parts, posing a choking hazard for children under 3 years.
- Compatibility is limited to specific Honda and Acura models and years.
4. Briggs & Stratton Replacement Screw
The Briggs & Stratton Replacement Screw is a genuine OEM part crafted to ensure proper fit and performance, thereby maintaining the life of your equipment.
This highly-rated screw has received 4.8 out of 5 stars from 190 ratings. Available for $6.69 on Amazon, it represents a 16% saving from its list price of $7.93. It measures 0.25 x 0.25 x 1.5 inches and weighs 0.32 ounces.
Best for: Replacing lost or damaged screws in various Briggs & Stratton models, including specific lawnmowers like the Troy-Bilt TB110 and TB200.
Pros:
- Genuine OEM replacement part
- Perfect fit for various models
- Ensures proper performance
- Highly rated by customers (4.8 out of 5 stars)
- Easy to install
- Fast, free shipping options are available
- Free returns offered
- Secure transaction for payment
Cons:
- Can be expensive for a single screw
- Image may be unavailable for the specific color
- Chosen enhancements might not be available for certain sellers
- Not available for quantities exceeding a specified maximum
- Issues may occur when retrieving or adding to Wish Lists
5. BeiJRDDBest 590586 Screw for Br-iggs and St-ratton Mower Cover
The (3 Pack) 590586 Screw for Br-iggs and St-ratton Mower Cover in black is an OEM part made of stainless steel. Each package contains three screws, weighing 0.02 kilograms per item.
These screws are specifically designed to fit various mower models including Bolens 20″ model 11A-020W765, Briggs and Stratton 450E series, and Troy-Bilt TB110/TB200.
Best for: Replacing broken or loose screw heads on B&S lawn mower covers.
- Pros:
- Perfect fit for specific mower models, including Bolens 11A-B0BL765, Briggs and Stratton 450E series, Troy-Bilt TB110, and TB200.
- Designed as an OEM Part Number: 590586.
- Comes in a 3-pack for convenience.
- Received a 5.0 out of 5 stars customer rating based on 13 global ratings.
- Offers fast, free shipping for Prime members or on orders over $35 shipped by Amazon.
- Includes free return options with no shipping charges.
- Cons:
- One customer feedback indicated the product was “too expensive”.
- Enhancements chosen might not be available for the selected seller.
- Issues sometimes occur with retrieving or adding items to Wish Lists.