J800 is the top rung of the Cat J-series, and the first thing to be clear about is that almost nothing from the rungs below it fits. The pin is 102-0101, the retainer is 101-2874, the weld-on base is 6I-8804, and the tips on that base weigh between 56 and 104 kg each. That is the whole rung: one hardware set, one base family, and a published weight range wide enough that "J800 teeth" on an order line does not tell a supplier what to ship.
1. Where the Top Rung Sits
Black Cat's J-series adapter table is the shortest way to place J800, because it prints the strap thickness it sells against each series and machine family. J800 is the only rung in that table listed at 4.00 in, and the machine family next to it is the Cat 994 wheel loader. One row above, J700 sits at 3.50 in for 992 and 385, which is why the two rungs get mixed up in quotations: a J700 set on a loader that wants J800 hardware is a different bucket job, not a heavier tooth.
| Strap thickness | Series | Machine family published |
|---|---|---|
| 4.00 in | J800 | 994 loader (Black Cat adapter table) |
| 3.50 in | J700 | 992, 385 |
| 2.50 in | J600 | 992, 990, 988 |
| 1.75 in | J400 | 980, 973, 966 |
TRASTEEL's own tables add the second application: its two-strap standard weld-on row for J800 is printed for 385 / 390 class buckets, and its heavy duty weld-on loader row for the same nose is printed for the 994. So J800 is quoted on both sides of the fleet — the largest wheel loaders and the 385 / 390 excavators — with the same tooth and the same pin.
2. Every Casting on the J800 Nose
These are the published numbers from the TRASTEEL TSJ catalogue (metric millimetres and kilograms) and Black Cat Wear Parts catalogue 215.1025 (pounds, converted here at 1 lb = 0.45359237 kg). Where a catalogue does not print a profile or a size, the cell is left empty — we do not fill gaps with guesses.
| Number | Profile | TRASTEEL weight | Black Cat weight | Printed size |
|---|---|---|---|---|
| 6I-8803 | loader casting | 104 kg | — | — |
| 135-9800 | loader rock penetration HD | 100 kg | 202.4 lb / 91.81 kg | 565 × 250 mm |
| TSJ-800-LHD | loader profile (TRASTEEL reference, Cat alternative 135-9800) | 99 kg | — | 580 × 240 × 150 mm |
| TSJ-800-PHD | excavator penetration | 77 kg | — | 590 × 240 × 135 mm |
| TSJ-800-V | excavator tiger | 62 kg | — | 620 × 242 mm |
| J800HDAL | heavy duty abrasion long | — | 206.6 lb / 93.71 kg | — |
| J800VX | chisel | — | 124.9 lb / 56.65 kg | — |
The loader penetration line, series by series
One number family deserves its own row, because it is the one buyers quote by mistake across rungs. Black Cat's loader penetration HD line runs 135-9600, 135-9700 and 135-9800 — one per rung, no shared casting:
| Series rung | Number | Black Cat weight |
|---|---|---|
| J600 | 135-9600 | 130.0 lb / 58.97 kg |
| J700 | 135-9700 | 147.9 lb / 67.09 kg |
| J800 | 135-9800 | 202.4 lb / 91.81 kg |
The step from J600 to J700 is 17.9 lb / 8.12 kg; the step from J700 to J800 is 54.5 lb / 24.72 kg. The last rung is not a bigger version of the one below it — it is a casting in a different weight class, which is why a 135-9700 quoted as a J800 replacement is the wrong part on the wrong base.
Two things stand out. First, the spread inside one series is 56.65 kg to 104 kg — nearly a factor of two on the same pin. Second, the loader side is where the weight sits: the two heaviest J800 numbers both carry loader profiles, and the abrasion long point at 206.6 lb is within 5 kg of the 994 loader tip. If you are replacing excavator points on a 385 with loader points because the box said J800, the bucket will load differently on the first shift.
3. The Base: 6I-8804, Centre and RH/LH
At this size the base is the expensive line item and the casting that decides whether a set of points lasts. There is one base family on the J800 nose, published by TRASTEEL at 240 × 100 mm and by Black Cat in three positions:
| Casting | Position | Black Cat weight | TRASTEEL weight | Pin / retainer | Machine |
|---|---|---|---|---|---|
| 6I-8804 | centre | 209.2 lb / 94.89 kg | 112 kg | 102-0101 / 101-2874 | 994 loader |
| 6I-8804 RH/LH | right or left hand | 232.1 lb / 105.28 kg | not printed | 102-0101 / 101-2874 | 994 loader |
The RH/LH casting is 10.39 kg heavier than the centre one in the same catalogue, so a corner set costs more in freight than the number of pieces suggests. And the base is welded to the lip: a wrong base is not a return, it is a bucket cut open and re-welded. Before ordering, measure the nose opening across the pocket, the pin bore and the lip thickness, and send a photograph of the base still in the bucket with an old point on it.
4. Pins and Retainers Across the Ladder
Hardware is where the higher rungs stop sharing. This table takes the pin and retainer published for each series in the same two catalogues:
| Series | Pin | Retainer | Notes |
|---|---|---|---|
| J800 | 102-0101 (alternative 134-1808) | 101-2874 (alternative 134-1809) | Black Cat's J800 pin block prints this pair directly against the J800 tooth column |
| J700 | 9U-9616 (alternative 113-4708) on excavator tips and bases; 4T-4708 on the 171-1704 loader base | 4T-4707 (alternative 113-4707) | See the J600 and J700 guide for the full split |
| J600 | 6I-6608 (alternative 113-9608) | 6I-6609 (alternative 113-9609) | One hardware set across every J600 profile |
| J450 | 1U-1558 | 3G-9559 | Black Cat's pin block, and the 8E-0468 / 8E-0469 pair on TRASTEEL's J450 long row |
| J400 | 7T-3408 (alternative 116-7408) | 8E-8409 (alternative 166-7409) in TRASTEEL; Black Cat prints 7T-3409 | The lowest rung, listed for reference; nothing here interchanges with J800 |
Read as a ladder, Black Cat's pin block is the cleanest evidence that the top rung is its own system: 7T-3408 / 7T-3409 for J400, 1U-1558 / 3G-9559 for J450, 6I-6608 / 6I-6609 for J600, 4T-4708 / 4T-4707 for J700, and 102-0101 / 101-2874 for J800. Five rungs, five hardware sets, no overlap.
One catalogue row is worth flagging before you order off it. TRASTEEL's two-strap standard weld-on table prints 9U-9616 (113-4708) — the J700 pin — against its J800 row for 385 / 390 buckets, with the 101-2874 retainer. Black Cat's J800 pin block prints 102-0101 for the same series. That does not mean the two pins are the same part; it means the catalogues index the two-strap rows differently from the heavy duty rows. Pull the old pin, read the number stamped on it, and if there is no number, send the diameter and length in millimetres and the question is settled in one message.
5. The Same Number, Two Published Weights
The J800 numbers repeat the pattern we see further down the ladder: the two catalogues print different weights for the same casting. On the top rung the gap is larger than anywhere else on the series.
| Number | TRASTEEL | Black Cat | Gap |
|---|---|---|---|
| 6I-8804 (centre) | 112 kg | 209.2 lb / 94.89 kg | 17.11 kg |
| 135-9800 | 100 kg | 202.4 lb / 91.81 kg | 8.19 kg |
| 6I-6602 (J600, for comparison) | 30.3 kg | 77.3 lb / 35.06 kg | 4.76 kg |
| 4T-4702 (J700, for comparison) | 41 kg | 97.3 lb / 44.13 kg | 3.13 kg |
Both are aftermarket catalogues cross-referencing the same Caterpillar numbers, so one of each pair is a different casting, a different measuring convention, or an older figure carried forward. The catalogue alone cannot tell you which applies to your order, and the answer matters at this weight: on a 100-piece base order the 6I-8804 gap is 1,711 kg, and on a 100-piece tip order the 135-9800 gap is 819 kg. What we do is quote the number and the weight you are replacing, check the casting against that weight, and print the actual kilo weight of the load on the packing list.
6. Loader Side and Excavator Side
On the loader, the J800 nose carries the rock penetration HD tip 135-9800 and the plain loader casting 6I-8803, on the 6I-8804 base, on buckets that take a 4.00 in strap. On 385 / 390 class excavators, TRASTEEL prints the same base against its LHD and PHD profiles, at 99 kg and 77 kg. The installation difference is not the tooth but the bucket: a loader bucket tip takes face impact and wears at the point, while an excavator tip takes breakout force and wears at the flank, so the abrasion long casting (J800HDAL, 206.6 lb / 93.71 kg) and the chisel casting (J800VX, 124.9 lb / 56.65 kg) exist for the second job, not the first.
7. What to Send Us
- The number on the casting — 6I-8803, 6I-8804, 135-9800 — not "J800 teeth".
- The position — centre or RH/LH. On the base the two castings differ by 10.39 kg and do not interchange.
- The pin, or its diameter and length in millimetres, off the pin you pulled.
- The machine — 994 loader, or 385 / 390 excavator — and the strap thickness if the bucket has been rebuilt.
- The weight you are replacing, in kilos. At this size it is the field that catches the 17 kg catalogue gap.
We supply the J800 family as aftermarket castings with pins, retainers and bases quoted on one line item, and we weigh and photograph the load against your order before it ships. Nothing on this page is a genuine Caterpillar part; the numbers are used to cross-reference fitment.
FAQ
Q: What pin and retainer does a Cat J800 bucket tooth take?
A: Pin 102-0101 (alternative 134-1808) and retainer 101-2874 (alternative 134-1809). Black Cat's J800 pin block prints that pair directly against the J800 tooth column, and the TRASTEEL rows carry the same two numbers with 134-1808 and 134-1809 as the alternatives. Nothing on the J800 nose takes the 9U-9616 pin or the 4T-4707 retainer used lower down the ladder.
Q: How heavy is a Cat J800 bucket tooth?
A: The published range runs from 56.65 kg (J800VX, 124.9 lb) to 104 kg. 135-9800 is 100 kg in TRASTEEL and 202.4 lb / 91.81 kg in Black Cat, the loader casting 6I-8803 is 104 kg, the abrasion long point J800HDAL is 206.6 lb / 93.71 kg, and the TRASTEEL profiles are TSJ-800-LHD 99 kg, TSJ-800-PHD 77 kg and TSJ-800-V 62 kg.
Q: How heavy is the Cat 6I-8804 weld-on base?
A: Black Cat prints 209.2 lb / 94.89 kg for the centre casting and 232.1 lb / 105.28 kg for the RH/LH casting; TRASTEEL prints 112 kg for the same number. That is a 17.11 kg gap on the centre position — about 1.7 t on a 100-piece order, so confirm the base by weight as well as by number.
Q: Which machines run Cat J800 bucket teeth?
A: Black Cat's adapter table puts the J800 system at a 4.00 in strap on the Cat 994 wheel loader, and TRASTEEL's two-strap standard weld-on row for J800 is printed for 385 / 390 class buckets. Both catalogues place J800 above J700 as the heaviest rung of the J-series, on a welded base rather than a bolted one.
Sources
Tip, base, pin and retainer numbers, published weights and printed sizes: COHIDREX TRASTEEL TSJ catalogue (millimetres and kilograms) and Black Cat Wear Parts "Cat J Series Teeth & Adapters" catalogue 215.1025 (pounds, converted at 1 lb = 0.45359237 kg). Strap thicknesses and machine families: Black Cat's J-series adapter table. Both are third-party aftermarket catalogues; Caterpillar, J-series and the part numbers are the property of their respective owners.