Home/Cummins ISX / ISX15 / X15 Parts/5658294 Cummins X15 Single Cam Cylinder Head Stage 3 Inconel Intake & Exhaust Valves
Cummins X15

5658294 Cummins X15 Single Cam Cylinder Head Stage 3 Inconel Intake & Exhaust Valves

JAK's Stage 3 X15 Single Cam Cylinder Head with Full Inconel Valves JAK's Stage 3 X15 Cylinder Head represents the pinnacle of performance and durability for X15 engines, offering a robust upgrade for high-demand applications....
Warranty BackedJAK's DieselFree Freight
Cross Ref060167, 3686431, 3686432, 3686434, 3686660, 3686660NX, 3686774, 3686880, 3686881, 3686881NX, 3687398, 3687607, 3687607NX, 3688754, 3688761, 3688761RX, 3688800, 3688800RX, 3691250, 3691252, 3691253, 4298234, 4298235, 4298236, 4298237, 4298237NX, 4298238, 4298238NX, 4298238RX, 4356434, 4356434NX, 4356434RX, 4374091, 4374091RX, 4386009, 4386009RX, 5394197, 5394197RX, 5394198, 5394198RX, 5628268, 5628269, 5658203RX, 5658294, 565829400RX, 5658294RX, 565830100RX, 5658302, 5708760, 570876000RX, 5708760NX, 5708760RX, AK-4386009, AK4386009, D-ISXHEAD SINGLE, DISXHEAD SINGLE, HBRN4298234IVS, MCB5314198, N4298234AVS, N4298234IVS, N4298234VS
$4,038.66$4,107.18 Save $68.52
In Stock — Ships Today if ordered by 3:00 PM MT 5 in Denver warehouse
Drop in your engine serial number and a JAK'S tech double-checks this part fits before your order ships — no guesswork.
Request a Written Quote — POs & fleet pricing
Secure Checkout 30-Day Returns Warranty Backed Ships Same Day
Not sure it's the right fit? Call a specialist
(720) 445-6249
Talk to a tech or text a photo of your part tag — we'll confirm fitment before you buy
BrandJAK's Diesel
Part CategoryCylinder Head
Engine MakeCummins
Engine ModelX15 · ISX15
ConditionNew
Stage / TierStage 3

JAK's Stage 3 X15 Single Cam Cylinder Head with Full Inconel Valves JAK's Stage 3 X15 Cylinder Head represents the pinnacle of performance and durability for X15 engines, offering a robust upgrade for high-demand applications. Engineered for seamless compatibility with X15 engines, this head features an OE-equivalent casting material enhanced with premium Inconel valves on both the intake and exhaust sides. Unlike the Stage 1, which uses standard valves, or the Stage 2, which incorporates Inconel valves only on the intake side, the Stage 3 delivers maximum resilience with Inconel valves throughout, providing superior resistance to extreme heat, pressure, corrosion, pitting, and fracturing. The use of Inconel valves for both intake and exhaust ensures exceptional performance under the most intense conditions, such as those encountered with high-horsepower modifications like marine camshafts, high-flow injectors, or large turbochargers. These valves withstand blistering temperatures and high-pressure environments, preventing common issues like valve fracturing, which can occur with standard valves in performance-tuned engines. This makes the Stage 3 ideal for heavy-duty applications, including fleet trucks, marine vessels, or racing setups, where reliability and longevity are critical. The Stage 3 cylinder head combines cost-effective engineering with top-tier materials, offering unmatched durability and performance for enthusiasts and professionals pushing their X15 engines to the limit. Note: Any references to OEM names, product IDs, descriptions, or model numbers are used solely for identification purposes and do not imply that this is an OEM part.

This part supersedes and cross-references the following OEM, dealer, and competitor numbers. Searching any of these will land here.

Number
060167
3686431
3686432
3686434
3686660
3686660NX
3686774
3686880
3686881
3686881NX
3687398
3687607
3687607NX
3688754
3688761
3688761RX
3688800
3688800RX
3691250
3691252
3691253
4298234
4298235
4298236
4298237
4298237NX
4298238
4298238NX
4298238RX
4356434
4356434NX
4356434RX
4374091
4374091RX
4386009
4386009RX
5394197
5394197RX
5394198
5394198RX
5628268
5628269
5658203RX
5658294
565829400RX
5658294RX
565830100RX
5658302
5708760
570876000RX
5708760NX
5708760RX
AK-4386009
AK4386009
D-ISXHEAD SINGLE
DISXHEAD SINGLE
HBRN4298234IVS
MCB5314198
N4298234AVS
N4298234IVS
N4298234VS
Don't see your number? We cross 1M+ OEM, dealer and competitor part numbers daily. Call or text (720) 445-6249 and a tech will match it by hand.
Cummins X15 ISX15

Warranty Backed. Every part is covered against defects in materials and workmanship. Call a specialist for the coverage details on this part.