Cylinder Head Bolt 04151904 for Deutz BF4L913 – OE Interchange

Verified Cross-Reference — every 04151904 bolt we ship has been checked against superseded Deutz references for 912/913 engines

Technical Specifications

Application Suitability

Superseded Numbers and Variant Differences in Deutz 912/913 Head Bolts

Cross-reference tables copied between sellers often carry errors forward, and a single wrong bolt variant means a head that will not seal or a stud that stretches on the first torque cycle.

Working in the Pearl River Delta warehouse for years, the most stressful moment is when a customer orders based solely on 04151904 without confirming engine serial or variant. I once encountered a Deutz BF6L913 owner where the part number matched, but the batch difference meant a slight thread tolerance deviation—forcing the bolt caused galling and an unplanned shutdown [NEED_CITE: thread tolerance standards for cylinder head fasteners in air-cooled diesel engines]. Today, verifying the serial number and variant is non-negotiable before any Cylinder Head Bolt kit leaves the shelf. The cost of a wrongly fitted head bolt is never just the bolt itself.

Engine Serial Range and Compatible Builds

The Cylinder Head Bolt 04151904 spans the Deutz F3L912 through F6L912 and BF4L913 to BF6L913 range, but not every engine within these families uses the identical fastener. Earlier 912-series builds may carry a superseded reference that no longer appears in current catalogs, while later 913-series engines introduced revised head castings with different engagement depths. Providing the engine serial narrows the search to the exact bolt variant your machine requires.

Thread Engagement, Head Seating, and Dimensional Verification

Thread engagement length and head seating geometry must match the specific cylinder head casting on your Deutz engine. A bolt that is marginally too long can bottom out in the block, giving a false torque reading while the clamp load remains inadequate. Conversely, a bolt that is slightly short will not develop sufficient stretch, risking head gasket failure under thermal cycling [NEED_CITE: cylinder head bolt stretch and clamp load relationship in diesel engines]. Physical measurement against the removed bolt or the service manual eliminates guesswork before installation.

Reading the Specifications That Matter

The four-piece packaging aligns with the per-cylinder bolt count on certain Deutz 912 configurations, meaning a complete F4L912 engine typically needs four packages. ISO certification ensures the bolt material and heat treatment meet standardized mechanical property requirements for tensile strength and yield point. The 3-12 month warranty window covers manufacturing defects, giving rebuild shops confidence to verify fitment during the initial assembly phase without long-term exposure on fastener integrity.

The Hidden Cost of Wrong Fitment

A bolt that threads in but does not match the original specification often passes the initial torque check, only to relax after the first heat cycle. The head gasket then begins to weep, combustion gases leak into the cooling passages, and the machine returns to the workshop within days [NEED_CITE: cylinder head fastener relaxation and gasket failure modes]. The cost of that second teardown—labor, downtime, and replacement gaskets—far exceeds the price of verifying the bolt variant before the first assembly.

Why Source This Fastener Here

Our own production lines and qualified sourced supply operate under one account with identical warranty terms, so whether the Cylinder Head Bolt comes from our facility or a partner, the quality standard remains consistent. Eight product categories mean your complete Deutz overhaul list—gaskets, bearings, pistons, seals—ships as one consignment rather than arriving in staggered deliveries. Minimum order from a single four-piece package supports emergency single-engine repairs. Guangzhou warehouse stock enables fast dispatch on common 912/913 references. Part identification works from the number, machine model, photograph, or nameplate image, and cross-reference verification covers superseded and alternate numbers including 4151904 and 2101681 (reference only). Sample supply lets you confirm physical fitment before committing to full fleet quantities.

Documentation & Verification

• Commercial invoice listing all cross-reference numbers (reference only) for customs clarity
• Dimensional check record confirming thread pitch and overall length before dispatch
• Fitment sheet matching supplied bolts to specific Deutz engine serial ranges
• Packing photographs showing bolt condition and quantity verification
• Warranty terms document specifying coverage period and defect claim process

Fitment Check Before Installation

• Compare thread pitch against the removed bolt or service manual specification
• Verify overall length matches the original to prevent bottoming out in the block
• Check head seating profile matches the cylinder head counterbore geometry
• Test-fit one bolt by hand before committing to full torque sequence
• If thread engagement feels tight or loose, stop and reconfirm the variant

Inquiry Guidance

Provide your Deutz engine model and serial number, or share a photograph of the removed bolt and nameplate. Our technical team will run the cross-reference against 04151904, 4151904, and 2101681 (reference only) to confirm which variant your specific build requires. Sample sets are available for physical fitment verification before you commit to full engine overhaul quantities.

Frequently Asked Questions

Q: How do I confirm 04151904 fits my specific Deutz engine when only the model is known? A: The model designation narrows the range, but engine serial confirms the exact head casting and bolt variant. Share your serial number or a photograph of the nameplate, and we verify against the applicable fitment list for BF4L913, BF6L913, or 912-series variants before dispatch.

Q: Are 4151904 and 2101681 interchangeable with 04151904, or are they for different engine variants? A: These numbers (reference only) appear across different Deutz production periods and catalog revisions. Some represent superseded references, others apply to specific engine builds. We verify all three against your engine serial to confirm which originally applied and whether the current replacement is dimensionally identical.

Q: My old bolt has a number not listed here—can you trace the correct current replacement? A: Deutz revised fastener references multiple times across the 912 and 913 production run. Send us the number stamped on your removed bolt along with the engine serial, and we trace the superseded pathway to identify the current compatible reference.

Q: Can I order a sample set to verify fitment before buying bolts for a full overhaul? A: Yes. A single four-piece package serves as a fitment sample. Install on one cylinder to confirm thread engagement, seating geometry, and torque behavior before ordering the remaining sets for the complete engine rebuild.

Q: Do different Deutz 912/913 variants use different cylinder head bolt lengths or thread pitches? A: Yes. Head casting revisions across the production run introduced variations in counterbore depth and thread engagement requirements. The engine serial number is the reliable identifier—we cross-check it against our fitment database before confirming the correct variant.