

🛠️ Seal the deal with Fel-Pro — where precision meets performance!
The FEL-PRO BS 40578 Rear Main Seal Set is a precision-engineered crankshaft seal kit designed for select Jeep and Dodge models from 1980 to 2002. Featuring a durable Viton seal with a loop spring, it ensures a leak-proof fit that meets or exceeds OEM standards. Lightweight and highly rated by users, this seal kit delivers professional-grade reliability and long-lasting engine protection.






| ASIN | B000C2E87M |
| Bearing Number | BS40578 |
| Bearing Type | Seal Bearing |
| Best Sellers Rank | #668,524 in Automotive ( See Top 100 in Automotive ) #619 in Automotive Replacement Crankshaft Seals |
| Brand | Fel-Pro |
| Compatible Lubricant | Oil |
| Customer Reviews | 4.6 4.6 out of 5 stars (72) |
| Date First Available | August 1, 2006 |
| Exterior | Painted |
| Global Trade Identification Number | 00084113737442 |
| Is Discontinued By Manufacturer | Yes |
| Item Thickness | 0.4 Inches |
| Item Weight | 1.6 ounces |
| Item dimensions L x W x H | 12 x 6 x 0.4 inches |
| Item model number | BS 40578 |
| Manufacturer | Fel-Pro |
| Manufacturer Part Number | BS 40578 |
| Material | Plastic |
| Model | Engine Main Seal Kit |
| OEM Part Number | BS40578 |
| Product Dimensions | 12 x 6 x 0.4 inches |
| Specification Met | Fda |
| UPC | 841137374424 084113737442 |
E**A
Great Viton seal
the Fel-Pro package contained a Viton seal with "National" cast into the material. Has a loop spring to maintain a good seal. worked for a GM 2.5L Iron Duke
S**N
Perfect
Fit perfectly on a 92 jeep yj 2.5. Zero leaks have roughly 2k miles on it since installed.
C**.
Perfect fit.
Perfect fit!
K**B
Perfect fit!
Exact part needed. Stopped rear main oil leak.
B**R
91 YJ Worked Perfect
91 YJ Worked Perfect
S**T
No leak
Fit 95 jeep yj
J**N
perfect fit
I used a screwdriver to pry the old one out and then used it to bang the new one into place so simple so easy and its done...phew, now to put it back together...arghhh
M**C
No more leak
No more leaky rear pinion seal
Trustpilot
1 month ago
3 days ago