What people love (and don’t love)
What people love
- Works great for front and rear crankshaft seal removal and installation.
- Tools enable installation of seal and wear sleeve to correct depth efficiently.
- Supplied studs fit correctly for certain Cummins crankshafts (e.g., 1995 12v model).
- Generally good working tool with solid functionality when used correctly.
- Highly rated by majority with 71% five-star reviews.
What people don’t love
- Incorrect thread pitch on supplied crankshaft mounting bolts can damage the crankshaft.
- Some screws and studs may be the wrong size or come stripped/damaged.
- Variations in hole alignment on the puller tool causing difficulty or damage.
- Reports of receiving incomplete or beat-up sets in poor condition.
- Must often supply your own hardware to avoid damage and ensure proper fit.
Effective when used carefully but beware of thread issues and inspect kit on arrival.
Summary based on customer review evidence.
Quick facts
- Brand: E-cowlboy
- Price: USD 127.99
- Rating: 4.20 (49 reviews)
If you’re replacing crankshaft seals on a compatible Cummins platform, this E-cowlboy Front + Rear Crankshaft Seal Remover & Installer set is built to help you do the job cleanly and confidently. It’s designed to install both front and rear crankshaft seals and wear sleeves without damaging the seal (which can help prevent leaks), and it also removes the rear crankshaft seal.
You can view the current price and full details on Amazon here.
This kit targets a broad range of engines—including Paccar PX-6 and several Cummins B/ISB/QSB applications—making it a practical choice for shops and DIYers who work on multiple model years. Components are CNC machined from heavy duty steel with a black anodized finish, and the parts are manufactured to OEM specifications and tested (per the manufacturer).
- Fits select 1989–2016 Cummins engines including 4BT 3.9L, B Series 5.9L, ISB 5.9L/6.7L, ISL 5.9L/6.7L, QSB 5.9L/6.7L, ISC 8.3L, and Paccar PX-6
- CNC machined heavy duty steel with black anodized finish for strength, durability, and corrosion resistance
- Designed to install front & rear crankshaft seals and wear sleeves without damaging the seal, and to remove the rear crankshaft seal
- Helps ensure correct installation depth of the crankshaft seal
- Direct replacement references include 3824078, 5395259, 3164660, ST-224C, 3824498/1338/5041, 3824500/5046, and 2063800090 (among others listed by the manufacturer)
What to double-check before buying: confirm your exact engine model/year and the seal or wear sleeve part numbers you’re servicing (examples listed by the maker include 3937111, 3904353, 3802820, 3934486, 5259499, 3926126, 3925529, and 4890833). This ensures the tool geometry matches your application.
Coverage: the manufacturer states a 30-day return window and a 12-month warranty.
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