

🛠️ Cover your power with confidence—Moroso’s got your engine covered!
The Moroso 99400 Engine Bag Cover is a premium, large-sized protective cover designed to fit big block engines up to 18.5 inches in length. Weighing just 0.51 pounds, it features a thick plastic exterior that offers durable protection against dust and damage. Highly rated by automotive enthusiasts, this cover is ideal for engine stands and project builds, combining professional-grade quality with lightweight convenience.




| ASIN | B000COS8LC |
| Best Sellers Rank | #56,557 in Automotive ( See Top 100 in Automotive ) #317 in Sports Fan Auto Accessories #348 in Automotive Trays & Bags |
| Brand | Moroso |
| Customer Reviews | 4.8 4.8 out of 5 stars (458) |
| Date First Available | November 23, 2005 |
| Exterior | Plastic |
| Is Discontinued By Manufacturer | No |
| Item Weight | 8.1 ounces |
| Item model number | 99400 |
| Manufacturer | Moroso |
| Manufacturer Part Number | 99400 |
| Model | MOROSO ENGINE BAG COVER |
| OEM Part Number | 99400 |
P**C
Great quality
No complaints Large thick bag that covers a big block on a stand with no problem.
A**R
As described
As described! Large enough for my project and good quality.
J**T
Your engine is a big investment. Protect it with one of these engine bags
The moroso engine bag is just what you need. It's large enough to cover the entire engine all the way the floor. Not to mention it's well worth the money it cost.
R**.
4.6 4V
Covers entire 4.6 4v engine on engine stand
G**W
Works perfect for LS 6.0 Shortblock!
Exactly what I needed for my LS 6.0 build. Helps keep the dust and dirt in the shop off of it and is pretty rugged for being a plastic bag. It’s definitely a thicker mil/thickness than just a traditional bag that people would use.
J**N
It’s big
Way better than trash bags. This fits around and over my engine stand catch pan, and almost to the floor with just an engine block.
R**Z
Perfect to protect your project motor
Ordered two of these, one to cover my SBF 351W and the other a Ford coyote motor. Covers both with ease with intakes on and good thick material. Better than the black plastic trash bag.
M**A
It's a bag, but there is quite a bit more to it than that!
Okay, so it really isn't just a glorified plastic bag. It's made of very thick plastic. It's got a nice square shape to it so that it settles cleanly down onto the engine without any big puckers or corners sticking up. It's the perfect length so that it covers the engine on the engine stand and extends far down for complete coverage, without being so long that it gets caught under and wrapped up in the wheels of the engine stand if you roll it around your shop. In addition to being functional, it also looks much more professional. I used to use plastic drop cloths to cover my engines, but was always taping and trimming and gathering, and getting it rolled around a wheel. And, at the end of the day, it looked like a mess. This simple change to using these engine storage bags makes a surprising improvement to the look of my shop.
Trustpilot
1 week ago
4 days ago