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Cummins 3050692 is the 24 volt 200 amp starter magnetic switch with four terminals and a mounting bracket. It is used on Cummins K, QSK and ISX engines. This aftermarket version has the same mounting and electrical connector as the original, so it plugs in and bolts on where the old one came off.
Sold as one unit. Check the number on your old part, or in the parts manual for your machine, before ordering.
| Part Type | Magnetic Switch |
| Replaces | Cummins 3050692 |
| Voltage | 24 V |
| Rating | 200 A |
| Terminals | Four |
| Fits | Cummins 6C8.3, QSC8.3, G855, K19, QSK19, K38, K50, ISM, ISX15, X12 and X13 engines |
| Condition | New, aftermarket |
| Stat. HS-Code | 853641 |
| Country of Manufacture | China |
Cummins machines
Check the part number on your old unit before ordering.
| Cummins Part No.(SPM Part No.) | Fits |
|---|---|
| 3050692(SPM-HEP-4168) | Cummins 6C8.3, QSC8.3, G855, K19, QSK19, K38, K50, ISM, ISX15, X12 and X13 engines |
Function dead with good fuses
A starter, glow plug or fuel relay that has burned its contacts stops the circuit without blowing a fuse.
Clicking but no power
A relay that clicks but does not pass current has worn contacts and needs replacing.
Heat and vibration
Relays near the engine wear out from heat and vibration. Swap them during major services.
Fleet spares
Relays are cheap to keep on the van and quick to change on site.
We check what other aftermarket sellers charge for this same part. Their prices on the date we checked:
| Seller | Price | Checked |
|---|---|---|
| FridayParts | USD 41.48 | 24 Oct 2026 |
| eBay (7 aftermarket sellers) | USD 42.89 to 86.56 | 25 Oct 2026 |
| Amazon (wangyongchang) | USD 49.00 | 24 Oct 2026 |
| DURAFORCE | USD 96.99 | 24 Oct 2026 |
| Spare Part Mart | USD 33.18 | Today |
Our price of USD 33.18 is 20% to 66% less than these sellers.
Found this part cheaper somewhere else? Send us the listing and we will beat it by 5% under our Price Beat Guarantee. Every order is also covered by our 30 day money back guarantee.
No. It is an aftermarket part made to fit in place of Cummins 3050692. It is not made by or affiliated with Cummins; the Cummins part number is used only to show what it replaces.
It fits Cummins 6C8.3, QSC8.3, G855, K19, QSK19, K38, K50, ISM, ISX15, X12 and X13 engines. Machines change parts between serial number ranges, so check the number on your old part or in your parts manual.
It has the same mounting and electrical connector as the original. Check the plug and terminals match your old part, and test it before putting the machine back to work.
Yes, we ship worldwide. Shipping is calculated at checkout, and every order is covered by our 30 day money back guarantee and price beat guarantee.
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Live rates for the quantity selected, delivered to your door. Confirmed at checkout.
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Join Marty Mates and we put 200 points on your account, worth $10 off an order over $75 USD. Then a point for every dollar you spend after that.
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