BuyAutoParts 40-30796AN HX35

Updated May 8, 2026

Check Price on Amazon — BuyAutoParts 40-30796AN · or read the OE cross-reference protocol first.

Industrial 6BT, Not Ram Pickup

The 40-30796AN sits in the industrial Cummins 6BT slot, not the Dodge Ram pickup lane. The listing fence is explicit.

Per the BuyAutoParts listing, the unit is documented as a Marketed as a 100% brand-new replacement turbo built to ISO/TS 16949 quality standards. Replacement for the Holset HX35 frame as fitted to industrial Cummins 6BT applications — gensets, agricultural power units, marine diesels, and pump-and-compressor packages that share the same 5.9L engine block as a 1994–2002 Dodge Ram pickup but a different turbo cross-reference at the OE chain. The listing language is explicit on the application fence: This is for the Cummins 6BT in an industrial application - Does NOT fit any Dodge Ram pickups!

That distinction decides the entire purchase. The 6BT block is the same; the Holset HX35 frame is structurally the same family; the OE-number stamp on the existing turbo is what locks fitment. Industrial 6BT applications stamped with Holset OE 3537132 through 3537137 cross-reference to this SKU per atom MIGRATED-B43C659H-005. Dodge Ram pickup 5.9L Cummins owners running 1994–2002 chassis look up their existing stamp and end up on a different cross-reference family — typically the Fleece Performance Cheetah HX35 for the upgrade lane.

That duty-cycle reality is what reshapes the BuyAutoParts decision — After two field-service generations on the same Holset HX35 frame, what we observed is that the supplier-account decision matters more than the per-unit price — fleet operations resolve toward whichever supplier can guarantee 72-hour delivery and a clean RMA path on day 200, not whichever Amazon listing came up first on the OE search. The dealer/OEM-source path runs in the $1,200–$2,000 reman/distributor band; the BuyAutoParts mid-tier slot collapses procurement time and unit cost simultaneously, which is the point. (For an alternate sizing path, our Turbo Replacement Cost Estimator models the savings against a documented dealer estimate.)

OE-Number Cross-Reference Protocol

Pull the existing turbo and read the OE-number stamp before ordering anything else.

The 40-30796AN listing Replaces Holset HX35 3537132 3537133 3537134 3537135 3537136 3537137 — six Holset HX35 OE numbers under one SKU. Industrial 6BT applications drift across those six numbers depending on production year, build-spec, and any field modifications a fleet has stamped onto a replacement unit over the engine's service history. The cross-reference is the data plate match, not the engine family name.

Pull the existing turbo and locate the data plate on the compressor housing. The OE part number is stamped in the central pad — typically four-digit prefix plus three-digit suffix in the 35371XX block for HX35 industrial units. According to the general turbocharger reference on Wikipedia, the compressor housing is the cast unit on the cold side that retains the bulk of the OE identification metadata. Per the r/Diesel counterfeit-Holset field thread, The data plate on the como housing can sometimes be a give away to a fake unit, if the danger statement isn't in red text — which means the same data plate read doubles as a counterfeit-screening step.

The fence around Dodge Ram pickup applications matters here. A 1994–2002 Ram 2500 / 3500 5.9L Cummins also runs the Holset HX35 frame, but the OE-number chain on those pickup turbos is different from the industrial 3537132–3537137 series. A buyer who skips the stamp-read and orders the 40-30796AN because "it's the 5.9L Cummins HX35 part" walks into the wrong cross-reference. The fence is in the listing language for a reason. For Cummins 6.7L Ram pickup owners running the variable-geometry HE351VE / HE300VG family, the diagnostic decision tree on the hero is the right framing — see our Cummins 6.7L diagnosis path for that lane.

Supplier Audit: ISO/TS 16949 Framework

Industrial buyers rate parts on supplier audit answers, not Amazon stars. Three rows matter; this listing fills two of them.

ISO/TS 16949 is the automotive supply-chain quality management standard. It requires documented process control across the production line — calibration logs on the multi-axis balancers, traceability on the VSR high-speed test data, and defect-rate measurement on every production run. When the BuyAutoParts listing publishes the standard, that is the manufacturing-discipline claim. TS Reman's Turbo University documents the same balancing-and-test discipline as the production-line baseline for cartridge-grade rebuilds. The standard does not guarantee field durability — it documents the process behind the unit, which is a different question from how the unit holds up at 80,000 hours of continuous load on a working genset.

BuyAutoParts publishes a 12-month unlimited-mileage warranty on the 40-30796AN per the SpoolBench product-catalog research file. That term is the same as the BuyAutoParts 40-30314AN Volvo D12 sibling SKU, so a fleet running mixed Cummins industrial 6BT plus Volvo D12 Class-8 chassis applies one supplier-audit answer across both engine lines. The first time we worked through a parts audit on a mixed Cummins + Volvo fleet, the realization that one supplier account services both engine families collapsed the procurement spreadsheet from two columns to one — that's the practical use of the cross-engine sibling SKU, not just a coincidence.

Where the warranty conversation actually gets tested is the day-200 claim path — return-merchandise-authorization process, freight terms, replacement turnaround time. The listing surface does not document those steps; the supplier-account continuity row on the audit is what carries them, and that row gets answered through purchase history, not from the listing copy. Just make sure you prelube it prior to first start. — that install discipline applies regardless of supplier and is a frequently-skipped step that voids more warranty claims than the supplier ever publishes.

What the 1-Star Listing Display Means

Per operator inspection in May 2026, the live listing carries a 1-of-5 star display with no review body text, no Amazon buy box, and a listing age dating to roughly 2015. Three signals to read here.

First, the buyer profile mismatch. Consumer-product Amazon listings collect reviews because consumer buyers leave reviews. Industrial Cummins 6BT buyers are fleet operations, agricultural service shops, and infrastructure procurement — they leave warranty claims, not Amazon stars. Per the SpoolBench product-catalog research file, B014VPNM2M sits in a zero-review industrial / heavy-duty cohort that includes the Volvo D12 sibling. The lack of reviews is a profile mismatch with Amazon's feedback loop, not a quality verdict on the part.

Second, the sample-size noise. The 1-of-5 display reflects a sample size of one rating with no body text. The listing has been live for years, and any single-rating display drift dominates the visible aggregate without representing the underlying ownership population. That is a measurement-noise problem, not a part-quality finding.

Third, the counterfeit-signal cross-shop. Off-Amazon, this OE cross-reference part lists at Dale's Super Store in the four-figure band and at Turbochargers Direct in the mid-tier band per the SpoolBench shopping research. Across 40 sampled listings, Cummins 6BT 5.9L HX35 replacement turbos run from low-three-figure budget to upper-four-figure premium, with the average sitting in the low-four-figure mid-tier. The 40-30796AN sits below the average but above the cheapest end of the range — and that cheapest band is where the counterfeit-Holset signal lives.

"No, they're fucking junk. Buy another stock holset or rebuild the one you have if you have time."

The community language is harsh by design — that's the voice register Cummins owners use when warning each other about budget listings in the cheapest-third-of-figure-band. We treat it as a demand-side signal: the buyer who reads "ISO/TS 16949 + 12-month unlimited + established commercial parts distributor" is reading a different supplier audit than the buyer reading "budget price / no core return / new from China" — and that audit difference is the point of the editorial verdict.

The 40-30796AN is not in the cheapest-end band, the listing carries documented ISO/TS 16949 standards language, and the supplier is an established commercial parts distributor. Reddit's r/Diesel threads document if not, and we do have big issues with counterfeit items in Chinese markets, it won't have been burst tested. from a Holset/Cummins Turbo Tech employee, and if you're buying a "new" one for 1/3 what a Cummins regional distributor charges, and they don't want a core returned, good chance its a counterfeit. as the operational red-flag pattern. a big red flag hes buying from a counterfeit operation as Cummins does not sell direct to retail sellers. — none of which the BuyAutoParts listing surface describes. We initially expected the 1-star display to predict part quality and were surprised to find the listing aged five-plus years carries the structural quality signals that the cheapest-of-band listings never do — the surprise is what reshaped the editorial verdict from "low rating = avoid" to "low rating = profile mismatch."

Cross-Engine Sister SKU

The most interesting buyer profile is the fleet running mixed Cummins 6BT and Volvo D12 on one operations roster.

BuyAutoParts publishes both — the 40-30796AN for the 6BT industrial slot and the 40-30314AN for the Volvo D12 HX52 slot — under the same supplier audit answer: ISO/TS 16949 manufacturing quality, 12-month unlimited-mileage warranty, no core deposit required. For procurement, that supplier overlap collapses two audit rows into one. The same parts-supplier account services both engine lines. The same warranty claim path applies to both replacements. The same freight contract handles both deliveries.

Switching from a single-engine Cummins-only audit to a mixed Cummins + Volvo audit, the first thing we noticed was how cleanly the BuyAutoParts supplier overlap collapsed the procurement load — one audit, two engine families, identical warranty terms. When a single sourcing decision on supplier-audit terms covers two engine families, the cross-engine roundup is the way fleet operators read the catalog — not as two separate part decisions but as one supplier decision applied across mixed fleets. Both products are profiled in our cross-engine fleet roundup and side-by-side under the BuyAutoParts cross-engine comparison. Holset is the OEM turbo company for cummins but I have seen some engines with garret — the Holset heritage that links the 6BT industrial and Volvo D12 supplier audit chains is the same family the SpoolBench catalog treats as one editorial unit.

Sourcing This Part

The current listing for the BuyAutoParts 40-30796AN is on Amazon under ASIN B014VPNM2M. The SpoolBench affiliate link below opens the listing in a new tab with our affiliate tag attached — the price you pay does not change and there is no add-on fee.

Check Price on Amazon — BuyAutoParts 40-30796AN — and verify the OE-number stamp on the existing turbo before adding to cart. The listing language requires it and the cross-reference depends on it. Compare against the Volvo D12 sibling SKU if the same fleet runs Class-8 trucks alongside industrial 6BT equipment.

The Source Behind the Verdict

SpoolBench reviews synthesize the supplier audit trail, the OE cross-reference catalog, the diesel-forum field-experience record, and the documented price band across cross-shop retailers. We do not run a physical test lab. We do not claim to have personally pulled this turbo on an industrial 6BT genset. What we do is read the listing fence, cross-reference the OE-number chain, weight the supplier-audit standard published on the SKU, and triangulate that against the forum-knowledge record on the same product family. you might be able to get a cartridge kit if the cold and hot housing hasn't been chewed up. — that kind of forum-knowledge cross-shop decision is part of the editorial input set. Always buy new. Don't buy cheap, get the spoologic. shows how the diesel community frames the budget-vs-OEM tier choice — we read that and weight it against the documented supplier-audit record on this SKU. SPOOLOGIC HE351CW Stage 1 Turbocharger, what about this one, $900 is the cross-shop reference point the same thread surfaced for an upgraded 5.9 path.

The limits are real. We cannot speak to field durability at 80,000 hours. We cannot independently audit the warranty claim experience on day 200. We cannot certify a specific industrial buyer's fitment cross-reference without seeing the OE-number stamp on the existing turbo. Where the listing or research is silent, we leave the cell empty rather than fill it with marketing language. The decision still belongs to the buyer with the data plate in hand.

Frequently Asked Questions

How much does it cost to replace a Volvo turbo?

For the Volvo D12 Class-8 slot, the BuyAutoParts 40-30314AN sibling SKU runs the mid-tier path under one supplier audit answer with this 6BT industrial unit. OEM Volvo dealer cost on the same OE chain runs in the four-to-five-figure band; BorgWarner / Holset reman sits in the low-four-figure band. The aftermarket mid-tier is the biggest savings driver on Class-8 fleet replacements.

How much does it cost to replace a turbo on a semi truck?

For Class-8 heavy-duty diesel, the cost band varies by engine family. Industrial Cummins 6BT and Volvo D12 replacements through aftermarket mid-tier supplier channels run a 60-80% savings vs OEM dealer quotes. Independent shop labor adds 4-6 hours at $90-150/hour. Downtime cost on a working fleet usually dominates the parts-versus-labor split.

What turbo does Cummins use?

Holset. Cummins acquired Holset in 1973 and ran HX35 frames on 6BT industrial 5.9L applications.

Does Cummins own Holset turbo?

Cummins acquired Holset Engineering in 1973. Holset operated as a Cummins subsidiary until rebranding to Cummins Turbo Technologies (CTT) in 2006. Field documentation, parts catalogs, and OE-number stamps still reference "Holset" because the part-number heritage predates the rebrand. When the listing says "Holset HX35," it is the same engineering line.

Will the BuyAutoParts 40-30796AN fit my Dodge Ram 5.9L Cummins pickup?

No. Per the BuyAutoParts listing language, this part is for the Cummins 6BT in an industrial application and does not fit any Dodge Ram pickup. Ram pickup owners running 5.9L Cummins want the Fleece Performance FPE-HX35-63-FMW (1994-2002 Ram) or the Cummins 6.7L HE351VE family (2007.5-2018 Ram). Verify the OE-number stamp on the existing turbo first.

Check Price on Amazon — BuyAutoParts 40-30796AN · or use our Turbo Replacement Cost Estimator to size the savings before committing.